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    "textoCompleto" => "<p class="elsevierStylePara"> Viernes 3 de Octubre &#47; Friday 3&#44; October<br></br> 11&#58;30&#58;00 a&#47;to 13&#58;30&#58;00</p><p class="elsevierStylePara"> Moderador&#47;Chairperson&#58;<br></br> Ana Navas Aci&#233;n</p><p class="elsevierStylePara"><span class="elsevierStyleBold">285 FACTORS RELATED TO THE ONSET AND PERSISTENCE OF CHRONIC BACK PAIN IN THE COMMUNITY&#58; RESULTS FROM A GENERAL POPULATION FOLLOW-UP STUDY</span></p><p class="elsevierStylePara"> Blair H&#46; Smith&#42;&#44; Alison M&#46; Elliott&#42;&#44; Philip C&#46; Hannaford&#42;&#44; W&#46; Alastair Chambers&#42;&#42;&#44; W&#46; Cairns Smith&#42;&#42;&#42;&#46; En nombre del Grupo&#58; Aberdeen Pain Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">&#42;Department of General Practice and Primary Care&#44; University of Aberdeen&#44; Aberdeen&#44; Scotland&#46; &#42;&#42;Pain Management Clinic&#44; Aberdeen Royal Infirmary&#44; Aberdeen&#44; Scotland&#46; &#42;&#42;&#42;Department of Public Health&#44; University of Aberdeen&#44; Aberdeen&#44; Scotland&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> Chronic back pain &#40;CBP&#41; is very common&#44; with a major impact on society&#46; Understanding its epidemiology is essential for treatment and prevention&#46; Most previous studies have focused on new or acute episodes or specific population groups&#46; This longitudinal population study compared the prevalence of chronic back pain at two points four years apart&#44; with socio-demographic&#44; health and pain-related factors associated with CBP onset&#44; persistence and recovery&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Method&#58;</span> A random sample &#40;5&#44;036 adults&#41; was drawn from 29 general practices in Grampian&#44; Scotland for postal survey in 1996&#59; those who agreed &#40;2&#44;184&#41; were re-surveyed in 2000&#46; The questionnaire included chronic pain case definition questions &#40;intermittent&#47;persistent pain or discomfort for 3 months or more&#41;&#59; cause &#40;1996&#41; or site &#40;2000&#41; of any chronic pain&#59; the Chronic Pain Grade &#40;a measure of severity&#41;&#59; the Level of Expressed Need &#40;LEN&#41; questionnaire &#40;a measure of help-seeking behaviour&#41;&#59; the SF-36 general health questionnaire&#59; demographic questions&#46; Those with CBP in 1996 and 2000 had &#34;persistent&#34; CBP&#59; those with CBP in 1996 but not 2000 had &#34;recovered&#34; CBP&#59; those with CBP in 2000 but not 1996 had &#34;new&#34; CBP&#46; Factors in 1996 predicting &#34;persistent&#34; and &#34;new&#34; CBP in 2000 were compared by multiple logistic regression&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> Corrected response rates were 82&#46;3&#37; &#40;1996&#41; and 83&#46;0&#37; &#40;2000&#41;&#46; The sample prevalence of chronic back pain was 16&#37; &#40;1996&#41; and 26&#37; &#40;2000&#41;&#46; CBP in 1996 was strongly associated with CBP in 2000 &#40;OR &#61; 20&#46;8&#41;&#46; &#34;Persistent&#34; CBP was associated with more severe pain&#44; higher LEN&#44; and poorer general health than &#34;new&#34; CBP&#46; Factors independently associated with &#34;persistent&#34; compared with &#34;recovered&#34; CBP were pre-existing arthritis elsewhere&#44; high LEN&#44; poor mental health &#40;SF-36&#41; and not living alone&#46; Factors independently predicting &#34;new&#34; CBP compared with no previous CBP were previous chronic pain elsewhere &#40;especially from arthritis&#44; injury or of uncertain cause&#41;&#44; and poor health in the physical function&#44; physical role&#44; energy and vitality&#44; and general health dimensions of the SF-36&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusion&#58;</span> This population-based study confirmed CBP as a common and persistent problem&#44; and it was generally clinical&#44; rather than socio-demographic factors that predicted its persistence and onset&#46; Individuals who experienced any chronic pain &#40;in the back or elsewhere&#41; were the most likely to develop or retain CBP&#46; This supports the existence of a &#34;chronic pain syndrome&#34;&#44; with common aetiological factors&#46; Prevention should focus on these factors&#46; The findings suggest that management or tertiary prevention of &#34;persistent&#34; CBP could focus on psychological health factors&#44; while primary prevention of &#34;new&#34; CBP could focus on physical health factors&#46; This study could not distinguish recurrent from continuous CBP&#44; nor could it examine persistence of pain at any site other than the back&#46; Further research is needed to explore this important and complex area&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">286 THYROXINE ADHERENCE STUDY&#58; RANDOMISED CONTROLLED CLINICAL TRIAL OF THE IMPACT OF AN EDUCATIONAL BOOKLET ON THYROXINE ADHERENCE IN PRIMARY HYPOTHYROIDISM</span></p><p class="elsevierStylePara"> Mike Crilly&#42;&#44; Aneez Esmail&#42;&#42;</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">&#42;Department of Public Health&#44; University of Aberdeen&#44; UK&#46; &#42;&#42;School of Primary Care&#44; University of Manchester&#44; UK&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> Patient non-adherence with long-term medication is widespread and the provision of health educational booklets may improve adherence&#46; The objective of this randomised clinical trial was to assess the clinical effectiveness of mailing an educational booklet to patients with primary hypothyroidism&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> Adults prescribed &#39;thyroxine replacement therapy&#39; for primary hypothyroidism &#40;autoimmune thyroiditis&#44; thyroidectomy&#44; or radio-iodine therapy&#41; were identified in three general practices&#46; Patients were randomly allocated to an intervention &#40;&#39;hypothyroid educational booklet&#39;&#41; or control group &#40;&#39;usual medical care&#39;&#41;&#46; The educational booklet &#40;&#39;readability&#39; of a tabloid newspaper&#41; contained a medication reminder sticker and calendar&#46; Random allocation was by random permutated blocks&#44; stratified by individual general practitioner&#46; Neither patients nor physicians were aware of the allocation schedule in advance&#46; Assessment at baseline and at 3 months included ultra-sensitive TSH &#40;thyroid stimulating hormone&#41; and patient questionnaire &#40;&#39;Short Form 36&#39;&#59; modified &#39;Billewicz Hypothyroid Index&#39;&#41;&#46; The primary outcome measure was mean &#39;within-subject&#39; change in TSH&#46; The intended sample size was 274&#46; All TSH results were concealed&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> 497 patients had hypothyroidism&#44; a point prevalence for treated primary hypothyroidism of 1&#46;47 &#37; &#40;95&#37;CI&#61; 1&#46;33&#37; to 1&#46;59&#37;&#41;&#46; Trial participants were younger than non-participants&#59; more likely to have been symptomatic at diagnosis&#59; undergone thyroidectomy&#59; and had a recent TSH within the reference range&#46; 332 patients with biochemically confirmed hypothyroidism participated&#46; All patients were accounted for at the end of the trial and analysed by &#39;intention to treat&#39; &#40;TSH available for 330&#41;&#46; The two groups were comparable at baseline&#46; The dose of thyroxine prescribed was similar for both groups&#44; although more patients in the intervention group had undetectable levels of TSH &#40;20&#37; vs&#46;13&#37;&#41;&#46; The mean &#39;within-subject&#39; change in TSH was -0&#46;11 mIU&#47;L &#40;intervention group&#41; and -0&#46;12 mIU&#47;L &#40;control group&#41;&#44; an absolute difference between groups of &#43;0&#46;01 mIU&#47;L &#40;95&#37; confidence interval -0&#46;93 to &#43;0&#46;94 mIU&#47;L&#41;&#46; Adjusted analysis &#40;ANCOVA&#41; for baseline TSH produced a difference between groups of -0&#46;12 mIU&#47;L &#40;95&#37;CI&#61; -1&#46;97 to &#43;1&#46;95&#41;&#46; Between group differences in the modified &#39;Billewicz Hypothyroid Index&#39; &#40;-2&#46;3&#59; 95&#37;CI -4&#46;9 to &#43;0&#46;3&#41;&#59; &#39;SF36-vitality&#39; &#40;&#43;2&#46;9&#59; 95&#37;CI -0&#46;4 to &#43;6&#46;3&#41;&#59; and &#39;SF36-general health&#39; &#40;&#43;1&#46;4&#59; 95&#37;CI -1&#46;7 to &#43;4&#46;6&#41; were minimal&#46; On sub-group analysis&#44; patients with baseline TSH greater than 4&#46;7 mIU&#47;L had a reduction in TSH that was 3&#46;09 mIU&#47;L &#40;95&#37;CI -2&#46;57 to &#43;8&#46;76 mIU&#47;L&#41; greater in the control group than the intervention group&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> Brief intervention with an educational booklet has no influence on adherence with thyroxine in primary hypothyroidism&#46; The findings do not support the routine distribution of health educational materials to improve patient adherence with medication&#46; Although a review of the literature indicates that printed educational material can influence objective outcome measures&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">287 THE EFFECT OF BODY MASS INDEX &#40;BMI&#41; ON THE CHANGE IN DISABILITY AND PAIN IN HIP AND KNEE OSTEOARTHRITIS</span></p><p class="elsevierStylePara"> Sujitha Ratnasingham<span class="elsevierStyleSup">1</span>&#44; Elizabeth M Badley<span class="elsevierStyleSup">2</span>&#44; Wendy Lou<span class="elsevierStyleSup">3</span>&#44; Gillian Hawker<span class="elsevierStyleSup">4</span></p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>Public Health Sciences&#44; University of Toronto&#44; Toronto&#44; Canada&#46; <span class="elsevierStyleSup">2</span>Arthritis Community and Eval&#46; Unit&#44; Public Health Sciences&#44; Toronto Western Research Instit&#46;&#44; University of Toronto&#44; Toronto&#44; Canada&#46; <span class="elsevierStyleSup">3</span>Public Health Sciences&#44; University of Toronto&#44; Toronto&#44; Canada&#46; <span class="elsevierStyleSup"> 4</span>Clinical Epidemiology&#44; University of Toronto&#44; Toronto&#44; Canada&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Background&#58;</span> High Body Mass Index &#40;BMI&#41; is a risk factor for incident hip and knee osteoarthritis &#40;OA&#41;&#46; Few studies have examined the effect of obesity on the pain and disability in established OA&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Objective&#58;</span> To establish whether there is a relationship between BMI and change in disability and pain in people with moderately severe hip&#47;knee arthritis&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> A prospective population-based study of individuals with moderately severe hip or knee arthritis in two counties in Ontario&#46; Eligible subjects completed a baseline and follow-up questionnaire at 3&#177;0&#46;5 years and had no prior total joint replacement surgery&#46; BMI was characterized as normal &#40;&#60;25&#41;&#44; overweight &#40;25-&#60;30&#41;&#44; or obese &#40;&#8805;30&#41;&#46; Disability and pain were assessed by a standardized instrument&#44; the WOMAC&#58; changes were categorized as worsened by Minimal Clinical Important Difference &#40;MCID&#41;&#42;&#44; improved by MCID&#42;&#44; or no change&#46; Logistic regression analyses were used to examine the association of BMI with changes adjusting for age&#44; sex&#44; county&#44; smoking status&#44; education&#44; income&#44; and living arrangements&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> In cross-sectional analyses&#44; obese individuals had worse disability and pain as compared to those of normal weight at both time 1 and time 2 after adjustment for other variables&#46; However&#44; in longitudinal analyses&#44; BMI was not associated with an MCID worsening in disability or pain&#46; Increasing age and low education were the only significant predictors of worsening disability and pain respectively after adjustment for other predictors&#46; Older age was the only significant predictor of improvement in both disability and pain in adjusted analyses&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> In this population with established OA&#44; obesity was not associated with change in pain or disability after adjustment for confounders&#44; suggesting risk factors for incidence may be different from those for progression&#46;</p><p class="elsevierStylePara"> &#42;Angst F&#44; A Aeschlimann&#44; G Stucki&#46; Minimal Clinically Important Rehabilitation Effects in Patients with Osteoarthritis of the Lower Extremities&#46; The Journal of Rheumatology 2002&#59; 29 &#40;1&#41;&#58; 131-138&#46;</p><p class="elsevierStylePara"> Angst F&#44; A Aeschlimann&#44; G Stucki&#46; Smallest Detectable and Minimal Clinically</p><p class="elsevierStylePara"> Important Differences of Rehabilitation Intervention with Their Implications for Required Sample Sizes Using WOMAC and SF-36 Quality of Life Measurement Instruments in Patients With Osteoarthritis of the Lower Extremities&#46; Arthritis Care &#38; Research 2001&#59; 45&#58; 384-391&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">288 PREVALENCE OF CHRONIC SYMPTOMS AND BRONCHIAL OBSTRUCTION IN YOUNG ADULTS ACCORDING TO GOLD STAGES</span></p><p class="elsevierStylePara"> Roberto de Marco<span class="elsevierStyleSup">1</span>&#44; Simone Accordini<span class="elsevierStyleSup">1</span>&#44; Isa Cerveri<span class="elsevierStyleSup">2</span>&#44; Angelo Corsico<span class="elsevierStyleSup">2</span>&#44; Jordi Sunyer<span class="elsevierStyleSup">3</span>&#44; Fran&#231;oise Neukirch<span class="elsevierStyleSup">4</span>&#44; Nino K&#252;nzli<span class="elsevierStyleSup">5</span>&#44; Benedicte Leynaert<span class="elsevierStyleSup">4</span>&#44; Thorarinn Gislason<span class="elsevierStyleSup">6</span>&#44; et al&#46; en nombre del Grupo&#58; for the ECRHS Study Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>Unit of Epidemiology and Medical Statistics&#44; University of Verona&#44; Verona&#44; Italy&#46; <span class="elsevierStyleSup">2</span>Division of Respiratory Diseases&#44; IRCCS Policlinico S&#46; Matteo&#44; University of Pavia&#44; Pavia&#44; Italy&#46; <span class="elsevierStyleSup">3</span>Respiratory and Environmental Health Research Unit&#44; Institut Municipal d&#39;Investigaci&#243; M&#232;dica&#44; Barcelona&#44; <span class="elsevierStyleSup">4</span>Unit 408&#44; National Institute of Health and Medical Research &#40;INSERM&#41;&#44; Paris&#44; France&#46; <span class="elsevierStyleSup"> 5</span>Institute of Social and Preventive Medicine&#44; University of Basel&#44; Basel&#44; Switzerland&#46; <span class="elsevierStyleSup">6</span>Department of Allergy and Respiratory Medicine&#44; University Hospital&#44; Reykjavik&#44; Iceland&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> The recently published Global Initiative for Chronic Obstructive Lung Disease &#40;GOLD&#41; guidelines provide a new staging system for chronic obstructive pulmonary disease &#40;COPD&#41; from mild &#40;stage I&#41; to severe &#40;stage III&#41;&#46; As a new approach&#44; the GOLD guidelines have introduced a stage 0 which represents absence of airflow obstruction but presence of chronic symptoms&#44; e&#46;g&#46; cough and phlegm&#44; and is meant to include subjects &#34;at risk&#34; for developing COPD later in life and to allow intervention while the disease is not yet a health problem&#46; The aim of the present study is&#58; i&#41; to assess the prevalence of COPD severity stages&#44; as defined in the GOLD guidelines&#44; in developed countries&#59; ii&#41; to evaluate if subjects either belonging to stage 0 or to the more severe stages share a common pattern of risk factors and use of health care resources due to respiratory problems&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> For the purposes of the present analysis&#44; we used the data of the European Community Respiratory Health Survey &#40;ECRHS&#41;&#44; which collected information about respiratory health&#44; lung function and a variety of factors known or hypothesised to be associated with COPD in more than 18&#44;000 young adults &#40;20-44 years&#41;&#44; enrolled from 1991 to 1993 in 16 European and other industrialised countries&#46; Data were summarised as prevalence rates &#40;&#37;&#41; with binomial exact 95&#37; confidence intervals&#46; Multinomial regression models were used to assess the association between the GOLD stages &#40;stage 0 and stages I&#43;&#41; and active&#47;passive smoking exposure&#44; respiratory infection in childhood&#44; occupational exposure to vapours&#44; gas&#44; dust or fumes&#44; socio-economic status and gender&#46; The relative risk ratios &#40;RRR&#41; were also adjusted for the effect of the ECRHS country&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> The overall prevalence rates were&#58; 11&#46;8&#37; &#40;95&#37;CI&#58; 11&#46;3-12&#46;3&#37;&#41; for stage 0 &#40;only chronic symptoms&#41;&#44; 2&#46;5&#37; &#40;95&#37;CI&#58; 2&#46;2-2&#46;7&#37;&#41; for COPD-stage I and 1&#46;1&#37; &#40;95&#37;CI&#58; 1&#46;0-1&#46;3&#37;&#41; for COPD-stage II&#46; Moderate-heavy smoking &#40;&#61; 15 pack-years&#41; was significantly associated with both stage 0 &#40;RRR&#61;4&#46;15&#59; 95&#37;CI&#58; 3&#46;55-4&#46;84&#41; and COPD &#40;RRR&#61;4&#46;09&#59; 95&#37;CI&#58; 3&#46;17-5&#46;26&#41;&#44; while COPD patients had a higher likelihood of giving up smoking &#40;RRR&#61;1&#46;39&#59; 95&#37;CI&#58; 1&#46;04-1&#46;86&#41; than stage 0 subjects &#40;RRR&#61;1&#46;05&#59; 95&#37;CI&#58; 0&#46;86-1&#46;27&#41;&#46; Environmental tobacco smoke had the same degree of positive association in both groups&#46; Respiratory infection in childhood and low socio-economic status were significantly and homogeneously associated with both stage 0 and COPD&#44; whereas occupational exposure was significantly associated only with stage 0&#46; All the GOLD stages were characterised by a significantly higher percentage of health care resource users than normal subjects &#40;p&#60;0&#46;001&#41;&#44; with no difference between stage 0 and COPD&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> A considerable percentage of young adults already suffer from COPD&#46; The GOLD stage 0 is characterised by the presence of the main risk factors for COPD and by the same high request for medical assistance&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">289 THE ECONOMIC COST OF CURRENT ASTHMA IN THE ITALIAN YOUNG ADULT GENERAL POPULATION&#46; RESULTS OF THE ITALIAN STUDY ON ASTHMA IN YOUNG ADULTS &#40;ISAYA&#41;</span></p><p class="elsevierStylePara"> Simone Accordini<span class="elsevierStyleSup">1</span>&#44; Roberto de Marco<span class="elsevierStyleSup">1</span>&#44; Alessandra Marinoni<span class="elsevierStyleSup">2</span>&#44; Massimiliano Bugiani<span class="elsevierStyleSup">3</span>&#44; Pietro Pirina<span class="elsevierStyleSup">4</span>&#44; Laura Carrozzi<span class="elsevierStyleSup">5</span>&#44; Rossano Dallari<span class="elsevierStyleSup">6</span>&#44; Orazio Buriani<span class="elsevierStyleSup">7</span>&#44; Simone Gerzeli<span class="elsevierStyleSup">8</span>&#44; et al&#46; en nombre del Grupo&#58; for the ISAYA Study Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>Unit of Epidemiology and Medical Statistics&#44; University of Verona&#44; Verona&#44; Italy&#46; <span class="elsevierStyleSup">2</span>Department of Applied Health Sciences&#44; Faculty of Medicine&#44; University of Pavia&#44; Pavia&#44; Italy&#46; <span class="elsevierStyleSup">3</span>CPA-ASL 4 Unit of Respiratory Medicine&#44; National Health Service&#44; Turin&#44; Italy&#46; <span class="elsevierStyleSup">4</span>Institute of Respiratory Diseases&#44; University of Sassari&#44; Sassari&#44; Italy&#46; <span class="elsevierStyleSup"> 5</span>Cardiopulmonary Department&#44; CNR Institute of Clinical Physiology&#44; Pisa&#44; Italy&#46; <span class="elsevierStyleSup">6</span>Unit of Pulmonology&#44; Hospital of Sassuolo&#44; National Health Service&#44; AUSL Modena&#44; Sassuolo&#44; Italy&#46; <span class="elsevierStyleSup">7</span>National Health Service&#44; AUSL Ferrara&#44; Ferrara&#44; Italy&#46; <span class="elsevierStyleSup">8</span>Department of Applied Statistics and Economics Libero Lenti&#44; University of Pavia&#44; Pavia&#44; Italy&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> Asthma is a common illness in industrialised countries&#44; with a high socio-economic burden due to productivity losses in young subjects&#44; avoidable deaths&#44; hospitalisation and daily drug treatment&#46; The aim of the present study is&#58; i&#41; to assess the total&#44; direct and indirect costs of current asthma in Italy&#59; ii&#41; to highlight the components of total cost&#59; and iii&#41; to evaluate the determinants of cost variations&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> In 2000&#44; a cost-of-illness &#40;COI&#41; study on the economic impact of current asthma was carried out in the frame of the Italian Study on Asthma in Young Adults &#40;ISAYA&#41;&#44; a multicentre cross-sectional survey on respiratory health in the Italian young adult general population &#40;20-44 years&#41;&#46; The COI study involved 527 current asthmatics with doctor diagnosis screened out of the 15591 responders in 7 Italian centres&#46; Each patient provided detailed information on direct medical expenditures &#40;general practitioner and specialist visits&#44; laboratory tests&#44; use of medicines&#44; Emergency Department visits&#44; hospital admissions&#41;&#44; productivity losses &#40;working days lost according to occupation&#41; and leisure time forgone &#40;days with impaired daily life activities other than work&#41;&#44; which were valued by rates&#44; market prices &#40;pharmacological treatment&#41; and market daily wages according to occupation&#46; Leisure time forgone was valued by the market hourly wage of domestic help&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> In 2000&#44; the mean annual cost per patient was 741 EUR&#58; direct medical expenditures and indirect costs represented 43&#37; &#40;317 EUR&#41; and 57&#37; &#40;424 EUR&#41; of total costs&#44; respectively&#46; The main component of direct medical expenditures was pharmacological treatment &#40;150 EUR&#41;&#44; whereas hospitalisation accounted for less than one fourth of direct costs &#40;73 EUR&#41;&#46; Productivity losses accounted for 63&#37; of indirect costs &#40;266 EUR&#41;&#46; The mean annual cost per patient with poor control of symptoms was more than three times as much as the cost per patient with an optimal control of the disease &#40;1342 vs 378 EUR&#41;&#46; The annual total cost estimated in Italian young adults was of about 650&#44;000&#44;000 EUR&#46; About 50&#37; of total cost was attributable to patients with a poor control of symptoms&#44; who were responsible for about 55&#37; of the total cost due to hospitalisation and 33&#37; of the total cost due to pharmacological treatment&#46; According to a logistic regression analysis&#44; high use of health resources &#40;&#62;350 EUR&#41; was positively associated with sex &#40;females&#41; and negatively associated with the control of symptoms&#59; the risk of production losses and leisure time forgone was lower for &#39;white collars&#39; and decreased according to the control of symptoms&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> In 2000&#44; indirect costs were the most relevant component of the total cost of current asthma in Italian young adults&#46; Direct medical expenditures were mainly generated by pharmacological treatment&#46; The failure in controlling symptoms was the main determinant of cost variations&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">290 ASSESSING DIFFERENCES BETWEEN CO-MORBIDITY AND MULTIMORBIDITY</span></p><p class="elsevierStylePara"> Cristina Rius<span class="elsevierStyleSup">1</span>&#44; Gl&#242;ria P&#233;rez<span class="elsevierStyleSup">2</span>&#44; Anna Schiaffino<span class="elsevierStyleSup">3</span>&#44; Esteve Fern&#225;ndez<span class="elsevierStyleSup">3</span>&#44; Rosa Gispert<span class="elsevierStyleSup">4</span></p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>CEESCAT&#44; Hospital Universitari Germans Trias i Pujol&#44; Badalona&#44; Espa&#241;a&#46; <span class="elsevierStyleSup">2</span>Programa de salud materno infantil&#44; Departament de Sanitat i Seguretat Social&#44; Barcelona&#44; Espa&#241;a&#46; <span class="elsevierStyleSup">3</span>Servicio de Prevenci&#243;n y Control del C&#225;ncer&#44; Instituto Catal&#225;n de Oncolog&#237;a&#44; Hospitalet de Llobregat&#44; Espa&#241;a&#46; <span class="elsevierStyleSup"> 4</span>Servicio de Informaci&#243;n y Estudios&#44; Departament de Sanitat i Seguretat Social&#44; Barcelona&#44; Espa&#241;a&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Background and Aim&#58;</span> The presence of multiple diseases is an emergent health problem because of the ageing of population and the related increase of the prevalence of chronic diseases&#46; Although there has been increasing interest in research on multiple diseases&#44; during recent years co-morbidity and multi-morbidity are frequently used as synonymous terms&#46; We aimed assess differences between multi-morbidity and co-morbidity when the index disease is stroke in a longitudinal study in Catalonia&#44; Spain&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> We used data from the Catalonian Health Interview Survey Follow-up Study &#40;COHESCA&#41; 1994-1998&#44; a population-based cohort&#46; We obtained complete follow-up from 11&#44;704 participants&#44; and we analysed 7&#44;077 persons aged 40-84 years old&#46; The questionnaire included information for 16 chronic conditions &#40;as present&#47;absent&#41;&#46; The analysis of co-morbidity and multi-morbidity was carried out in three sequential ways&#46; First&#44; we assessed differences in descriptive analysis based on crude prevalence of chronic diseases in multi-morbidity approach and related with stroke in co-morbidity approach&#46; Second&#44; we adjusted logistic regression models to compute the relative risks of death &#40;RR and 95&#37; confidence interval &#91;CI&#93;&#41; according to index disease &#40;stroke&#41; in the co-morbidity approach and all chronic conditions in the multi-morbidity approach&#46; We fitted the models separately for both sexes and we adjusted all models for age&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> In multi-morbidity approach crude prevalences&#44; respectively for men and women&#44; are&#58; suffer from stroke 2&#44;5&#37; and 2&#44;1&#37;&#44; suffer from hypertension 21&#44;1&#37; and 29&#44;6&#37;&#44; suffer from hearth diseases 9&#44;8&#37; and 9&#44;7&#37;&#44; suffer from diabetes 7&#44;5&#37; and 8&#44;3&#37; and suffer from depression 8&#37; and 20&#44;2&#37;&#46; In co-morbidity approach&#44; prevalences of suffering from stroke and other chronic diseases&#44; respectively for men and women&#44; are&#58; with hypertension 53&#44;2&#37; and 65&#44;4&#37;&#44; with hearth diseases 41&#44;8&#37; and 49&#44;4&#37;&#44; with diabetes 13&#44;9&#37; and 23&#44;2&#37;&#44; and with depression 27&#44;8&#37; and 41&#44;5&#37;&#46; In the multi-morbidity approach&#44; the RR of death for suffer from stroke is 2&#44;04 &#40;95&#37;CI&#58;1&#44;15-3&#44;62&#41;&#44; for hypertension 1&#44;09 &#40;95&#37;CI 0&#44;8-1&#44;49&#41;&#44; for hearth diseases 1&#44;45 &#40;95&#37;CI 1-2&#44;09&#41;&#44; for diabetes 1&#44;22 &#40;95&#37;CI 0&#44;79-1&#44;87&#41; and for depression 1&#44;24 &#40;95&#37;CI 0&#44;77-2&#44;01&#41; for men&#46; For women&#44; are 3&#44;20 &#40;95&#37;CI 1&#44;76-5&#44;79&#41;&#44; 1&#44;04 &#40;95&#37;CI 0&#44;75-1&#44;44&#41;&#44; 1&#44;49 &#40;95&#37;CI 0&#44;99-2&#44;22&#41;&#44; 2&#44;22 &#40;95&#37;CI 1&#44;49-3&#44;31&#41; and 0&#44;86 &#40;95&#37;CI 0&#44;56-1&#44;32&#41; respectively&#46; In the co-morbidity approach&#44; the RRs of death by stroke adjusted for age and the 4 co-existent diseases is 2&#46;2 &#40;95&#37;CI 1&#44;26-3&#44;86&#41; for men and 3&#44;22 &#40;95&#37;CI 1&#44;81-5&#44;75&#41; for women&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusion&#58;</span> Prevalence of multiple chronic diseases in the same person could be expressed in different ways according with objectives and study design&#46; In our study&#44; the use of co-morbidity instead of multi-morbidity provided more accurate information&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">Partially funded by Fondo de Investigaci&#243;n Sanitaria &#40;98&#47;0053-01&#41;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">291 SWEDISH MULTIPLE SCLEROSIS REGISTRY&#46; IT&#39;S CONCEPT&#44; STRUCTURE&#44; PURPOSE AND APPLICATION AREAS</span></p><p class="elsevierStylePara"> Leszek Stawiarz&#44; Jan Hillert&#46; En nombre del Grupo&#58; MS Database Co-ordinating Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">Division of Neurology&#44; Karolinska Institute&#44; Huddinge Univ&#46; Hospital&#44; Stockholm&#44; Sweden&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Objectives&#58;</span> The SMS-registry is a solution integrating a concise&#44; standardized clinical description of MS patients accepted nationwide&#44; with the local needs expressed in specialized tests or paraclinical examinations&#46; It supports a specific design with a simple user interface&#44; comprehensive query generator&#44; tools for system management&#44; built-in on-line help&#44; security mechanisms and flexibility in many aspects&#46; The SMS-registry&#44; in its local and web-based versions&#44; has been developed at the Division of Neurology&#44; Huddinge University Hospital&#44; Karolinska Institute in collaboration with the MS Database Co-ordinating Group&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Main purposes of the system&#58;</span> SMS-registry has been designed for clinical and research related purposes&#46; It primarily aims to&#58; <span class="elsevierStyleItalic">1&#41;</span> provide &#34;condensed&#34; patient information helping in clinical settings&#44; <span class="elsevierStyleItalic">2&#41;</span> standardize and ensure the quality registration and clinical handlings&#44; <span class="elsevierStyleItalic">3&#41;</span> guarantee the use of current therapy guidelines in MS treatment&#44; <span class="elsevierStyleItalic">4&#41;</span> evaluate the short and long term effects of MS treatment&#44; <span class="elsevierStyleItalic">5&#41;</span> estimate the quality of life&#44; <span class="elsevierStyleItalic">6&#41;</span> improve the MS-related health care&#46; It can also be&#58; a source of information necessary for different research projects&#59; a base for epidemiological studies&#59; a help in finding the suitable patients to clinical trials&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">System design&#58;</span> The important concept in the design of the Interactive Database system for MS &#40;IDMS&#41; is its modular structure&#46; It is built around a standardized kernel of basic&#44; personal information&#44; with modules of clinical data&#44; immunomodulating treatment and bout events&#46; When an MS patient visits a neurological clinic&#44; the essential information is collected in these modules&#46; The kernel includes description of disease onset&#44; current MS diagnosis&#47;course together with additional&#44; clinically relevant information like current EDSS value&#44; pathologic CSF and MRI&#44; or familial MS&#46; User defined modules have been designed to meet the needs of gathering paraclinical data and collecting information originating from a number of research projects&#46; Selective access to data of different type was an important feature in planning of the system&#46; This resulted in several specialized modules of MRI findings&#44; quality of life&#44; or functional scores proposed by the MS Database Co-ordinating Group&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Use of IDMS program and SMS registry&#58;</span> The IDMS system is used at all university&#44; neurological clinics in Sweden and at some larger neurological centers&#46; It is offered to all MS-related health institutions&#46; The last gathered nationwide data of October 2002&#44; comprised 4100 patients - approximately 1&#47;3 of the whole expected prevalent MS-population in Sweden&#46; SMS-registry is governed by the MS Database Coordinating Group&#44; consisting of the annually elected&#44; MS-related healthcare personal&#46; SMS-registry is approved by The National Board of Health and Welfare &#40;Socialstyrelsen&#41; together with 50 other quality registries in Sweden&#46; Because of the increasing importance of quality registers in improvement of health care&#44; and all the health-political aspects related to them&#44; the SMS-registry is economically supported by Socialstyrelsen&#46; The activity reports concerning the SMS-registry are annually presented to Socialstyrelsen &#40;http&#58;&#47;&#47;www&#46;sos&#46;se&#47;mars&#47;kvaflik&#46;htm&#41;&#46;</p>"
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Comunicaciones orales : Enfermedades crónicas
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    "textoCompleto" => "<p class="elsevierStylePara"> Viernes 3 de Octubre &#47; Friday 3&#44; October<br></br> 11&#58;30&#58;00 a&#47;to 13&#58;30&#58;00</p><p class="elsevierStylePara"> Moderador&#47;Chairperson&#58;<br></br> Ana Navas Aci&#233;n</p><p class="elsevierStylePara"><span class="elsevierStyleBold">285 FACTORS RELATED TO THE ONSET AND PERSISTENCE OF CHRONIC BACK PAIN IN THE COMMUNITY&#58; RESULTS FROM A GENERAL POPULATION FOLLOW-UP STUDY</span></p><p class="elsevierStylePara"> Blair H&#46; Smith&#42;&#44; Alison M&#46; Elliott&#42;&#44; Philip C&#46; Hannaford&#42;&#44; W&#46; Alastair Chambers&#42;&#42;&#44; W&#46; Cairns Smith&#42;&#42;&#42;&#46; En nombre del Grupo&#58; Aberdeen Pain Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">&#42;Department of General Practice and Primary Care&#44; University of Aberdeen&#44; Aberdeen&#44; Scotland&#46; &#42;&#42;Pain Management Clinic&#44; Aberdeen Royal Infirmary&#44; Aberdeen&#44; Scotland&#46; &#42;&#42;&#42;Department of Public Health&#44; University of Aberdeen&#44; Aberdeen&#44; Scotland&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> Chronic back pain &#40;CBP&#41; is very common&#44; with a major impact on society&#46; Understanding its epidemiology is essential for treatment and prevention&#46; Most previous studies have focused on new or acute episodes or specific population groups&#46; This longitudinal population study compared the prevalence of chronic back pain at two points four years apart&#44; with socio-demographic&#44; health and pain-related factors associated with CBP onset&#44; persistence and recovery&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Method&#58;</span> A random sample &#40;5&#44;036 adults&#41; was drawn from 29 general practices in Grampian&#44; Scotland for postal survey in 1996&#59; those who agreed &#40;2&#44;184&#41; were re-surveyed in 2000&#46; The questionnaire included chronic pain case definition questions &#40;intermittent&#47;persistent pain or discomfort for 3 months or more&#41;&#59; cause &#40;1996&#41; or site &#40;2000&#41; of any chronic pain&#59; the Chronic Pain Grade &#40;a measure of severity&#41;&#59; the Level of Expressed Need &#40;LEN&#41; questionnaire &#40;a measure of help-seeking behaviour&#41;&#59; the SF-36 general health questionnaire&#59; demographic questions&#46; Those with CBP in 1996 and 2000 had &#34;persistent&#34; CBP&#59; those with CBP in 1996 but not 2000 had &#34;recovered&#34; CBP&#59; those with CBP in 2000 but not 1996 had &#34;new&#34; CBP&#46; Factors in 1996 predicting &#34;persistent&#34; and &#34;new&#34; CBP in 2000 were compared by multiple logistic regression&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> Corrected response rates were 82&#46;3&#37; &#40;1996&#41; and 83&#46;0&#37; &#40;2000&#41;&#46; The sample prevalence of chronic back pain was 16&#37; &#40;1996&#41; and 26&#37; &#40;2000&#41;&#46; CBP in 1996 was strongly associated with CBP in 2000 &#40;OR &#61; 20&#46;8&#41;&#46; &#34;Persistent&#34; CBP was associated with more severe pain&#44; higher LEN&#44; and poorer general health than &#34;new&#34; CBP&#46; Factors independently associated with &#34;persistent&#34; compared with &#34;recovered&#34; CBP were pre-existing arthritis elsewhere&#44; high LEN&#44; poor mental health &#40;SF-36&#41; and not living alone&#46; Factors independently predicting &#34;new&#34; CBP compared with no previous CBP were previous chronic pain elsewhere &#40;especially from arthritis&#44; injury or of uncertain cause&#41;&#44; and poor health in the physical function&#44; physical role&#44; energy and vitality&#44; and general health dimensions of the SF-36&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusion&#58;</span> This population-based study confirmed CBP as a common and persistent problem&#44; and it was generally clinical&#44; rather than socio-demographic factors that predicted its persistence and onset&#46; Individuals who experienced any chronic pain &#40;in the back or elsewhere&#41; were the most likely to develop or retain CBP&#46; This supports the existence of a &#34;chronic pain syndrome&#34;&#44; with common aetiological factors&#46; Prevention should focus on these factors&#46; The findings suggest that management or tertiary prevention of &#34;persistent&#34; CBP could focus on psychological health factors&#44; while primary prevention of &#34;new&#34; CBP could focus on physical health factors&#46; This study could not distinguish recurrent from continuous CBP&#44; nor could it examine persistence of pain at any site other than the back&#46; Further research is needed to explore this important and complex area&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">286 THYROXINE ADHERENCE STUDY&#58; RANDOMISED CONTROLLED CLINICAL TRIAL OF THE IMPACT OF AN EDUCATIONAL BOOKLET ON THYROXINE ADHERENCE IN PRIMARY HYPOTHYROIDISM</span></p><p class="elsevierStylePara"> Mike Crilly&#42;&#44; Aneez Esmail&#42;&#42;</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">&#42;Department of Public Health&#44; University of Aberdeen&#44; UK&#46; &#42;&#42;School of Primary Care&#44; University of Manchester&#44; UK&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> Patient non-adherence with long-term medication is widespread and the provision of health educational booklets may improve adherence&#46; The objective of this randomised clinical trial was to assess the clinical effectiveness of mailing an educational booklet to patients with primary hypothyroidism&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> Adults prescribed &#39;thyroxine replacement therapy&#39; for primary hypothyroidism &#40;autoimmune thyroiditis&#44; thyroidectomy&#44; or radio-iodine therapy&#41; were identified in three general practices&#46; Patients were randomly allocated to an intervention &#40;&#39;hypothyroid educational booklet&#39;&#41; or control group &#40;&#39;usual medical care&#39;&#41;&#46; The educational booklet &#40;&#39;readability&#39; of a tabloid newspaper&#41; contained a medication reminder sticker and calendar&#46; Random allocation was by random permutated blocks&#44; stratified by individual general practitioner&#46; Neither patients nor physicians were aware of the allocation schedule in advance&#46; Assessment at baseline and at 3 months included ultra-sensitive TSH &#40;thyroid stimulating hormone&#41; and patient questionnaire &#40;&#39;Short Form 36&#39;&#59; modified &#39;Billewicz Hypothyroid Index&#39;&#41;&#46; The primary outcome measure was mean &#39;within-subject&#39; change in TSH&#46; The intended sample size was 274&#46; All TSH results were concealed&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> 497 patients had hypothyroidism&#44; a point prevalence for treated primary hypothyroidism of 1&#46;47 &#37; &#40;95&#37;CI&#61; 1&#46;33&#37; to 1&#46;59&#37;&#41;&#46; Trial participants were younger than non-participants&#59; more likely to have been symptomatic at diagnosis&#59; undergone thyroidectomy&#59; and had a recent TSH within the reference range&#46; 332 patients with biochemically confirmed hypothyroidism participated&#46; All patients were accounted for at the end of the trial and analysed by &#39;intention to treat&#39; &#40;TSH available for 330&#41;&#46; The two groups were comparable at baseline&#46; The dose of thyroxine prescribed was similar for both groups&#44; although more patients in the intervention group had undetectable levels of TSH &#40;20&#37; vs&#46;13&#37;&#41;&#46; The mean &#39;within-subject&#39; change in TSH was -0&#46;11 mIU&#47;L &#40;intervention group&#41; and -0&#46;12 mIU&#47;L &#40;control group&#41;&#44; an absolute difference between groups of &#43;0&#46;01 mIU&#47;L &#40;95&#37; confidence interval -0&#46;93 to &#43;0&#46;94 mIU&#47;L&#41;&#46; Adjusted analysis &#40;ANCOVA&#41; for baseline TSH produced a difference between groups of -0&#46;12 mIU&#47;L &#40;95&#37;CI&#61; -1&#46;97 to &#43;1&#46;95&#41;&#46; Between group differences in the modified &#39;Billewicz Hypothyroid Index&#39; &#40;-2&#46;3&#59; 95&#37;CI -4&#46;9 to &#43;0&#46;3&#41;&#59; &#39;SF36-vitality&#39; &#40;&#43;2&#46;9&#59; 95&#37;CI -0&#46;4 to &#43;6&#46;3&#41;&#59; and &#39;SF36-general health&#39; &#40;&#43;1&#46;4&#59; 95&#37;CI -1&#46;7 to &#43;4&#46;6&#41; were minimal&#46; On sub-group analysis&#44; patients with baseline TSH greater than 4&#46;7 mIU&#47;L had a reduction in TSH that was 3&#46;09 mIU&#47;L &#40;95&#37;CI -2&#46;57 to &#43;8&#46;76 mIU&#47;L&#41; greater in the control group than the intervention group&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> Brief intervention with an educational booklet has no influence on adherence with thyroxine in primary hypothyroidism&#46; The findings do not support the routine distribution of health educational materials to improve patient adherence with medication&#46; Although a review of the literature indicates that printed educational material can influence objective outcome measures&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">287 THE EFFECT OF BODY MASS INDEX &#40;BMI&#41; ON THE CHANGE IN DISABILITY AND PAIN IN HIP AND KNEE OSTEOARTHRITIS</span></p><p class="elsevierStylePara"> Sujitha Ratnasingham<span class="elsevierStyleSup">1</span>&#44; Elizabeth M Badley<span class="elsevierStyleSup">2</span>&#44; Wendy Lou<span class="elsevierStyleSup">3</span>&#44; Gillian Hawker<span class="elsevierStyleSup">4</span></p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>Public Health Sciences&#44; University of Toronto&#44; Toronto&#44; Canada&#46; <span class="elsevierStyleSup">2</span>Arthritis Community and Eval&#46; Unit&#44; Public Health Sciences&#44; Toronto Western Research Instit&#46;&#44; University of Toronto&#44; Toronto&#44; Canada&#46; <span class="elsevierStyleSup">3</span>Public Health Sciences&#44; University of Toronto&#44; Toronto&#44; Canada&#46; <span class="elsevierStyleSup"> 4</span>Clinical Epidemiology&#44; University of Toronto&#44; Toronto&#44; Canada&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Background&#58;</span> High Body Mass Index &#40;BMI&#41; is a risk factor for incident hip and knee osteoarthritis &#40;OA&#41;&#46; Few studies have examined the effect of obesity on the pain and disability in established OA&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Objective&#58;</span> To establish whether there is a relationship between BMI and change in disability and pain in people with moderately severe hip&#47;knee arthritis&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> A prospective population-based study of individuals with moderately severe hip or knee arthritis in two counties in Ontario&#46; Eligible subjects completed a baseline and follow-up questionnaire at 3&#177;0&#46;5 years and had no prior total joint replacement surgery&#46; BMI was characterized as normal &#40;&#60;25&#41;&#44; overweight &#40;25-&#60;30&#41;&#44; or obese &#40;&#8805;30&#41;&#46; Disability and pain were assessed by a standardized instrument&#44; the WOMAC&#58; changes were categorized as worsened by Minimal Clinical Important Difference &#40;MCID&#41;&#42;&#44; improved by MCID&#42;&#44; or no change&#46; Logistic regression analyses were used to examine the association of BMI with changes adjusting for age&#44; sex&#44; county&#44; smoking status&#44; education&#44; income&#44; and living arrangements&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> In cross-sectional analyses&#44; obese individuals had worse disability and pain as compared to those of normal weight at both time 1 and time 2 after adjustment for other variables&#46; However&#44; in longitudinal analyses&#44; BMI was not associated with an MCID worsening in disability or pain&#46; Increasing age and low education were the only significant predictors of worsening disability and pain respectively after adjustment for other predictors&#46; Older age was the only significant predictor of improvement in both disability and pain in adjusted analyses&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> In this population with established OA&#44; obesity was not associated with change in pain or disability after adjustment for confounders&#44; suggesting risk factors for incidence may be different from those for progression&#46;</p><p class="elsevierStylePara"> &#42;Angst F&#44; A Aeschlimann&#44; G Stucki&#46; Minimal Clinically Important Rehabilitation Effects in Patients with Osteoarthritis of the Lower Extremities&#46; The Journal of Rheumatology 2002&#59; 29 &#40;1&#41;&#58; 131-138&#46;</p><p class="elsevierStylePara"> Angst F&#44; A Aeschlimann&#44; G Stucki&#46; Smallest Detectable and Minimal Clinically</p><p class="elsevierStylePara"> Important Differences of Rehabilitation Intervention with Their Implications for Required Sample Sizes Using WOMAC and SF-36 Quality of Life Measurement Instruments in Patients With Osteoarthritis of the Lower Extremities&#46; Arthritis Care &#38; Research 2001&#59; 45&#58; 384-391&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">288 PREVALENCE OF CHRONIC SYMPTOMS AND BRONCHIAL OBSTRUCTION IN YOUNG ADULTS ACCORDING TO GOLD STAGES</span></p><p class="elsevierStylePara"> Roberto de Marco<span class="elsevierStyleSup">1</span>&#44; Simone Accordini<span class="elsevierStyleSup">1</span>&#44; Isa Cerveri<span class="elsevierStyleSup">2</span>&#44; Angelo Corsico<span class="elsevierStyleSup">2</span>&#44; Jordi Sunyer<span class="elsevierStyleSup">3</span>&#44; Fran&#231;oise Neukirch<span class="elsevierStyleSup">4</span>&#44; Nino K&#252;nzli<span class="elsevierStyleSup">5</span>&#44; Benedicte Leynaert<span class="elsevierStyleSup">4</span>&#44; Thorarinn Gislason<span class="elsevierStyleSup">6</span>&#44; et al&#46; en nombre del Grupo&#58; for the ECRHS Study Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>Unit of Epidemiology and Medical Statistics&#44; University of Verona&#44; Verona&#44; Italy&#46; <span class="elsevierStyleSup">2</span>Division of Respiratory Diseases&#44; IRCCS Policlinico S&#46; Matteo&#44; University of Pavia&#44; Pavia&#44; Italy&#46; <span class="elsevierStyleSup">3</span>Respiratory and Environmental Health Research Unit&#44; Institut Municipal d&#39;Investigaci&#243; M&#232;dica&#44; Barcelona&#44; <span class="elsevierStyleSup">4</span>Unit 408&#44; National Institute of Health and Medical Research &#40;INSERM&#41;&#44; Paris&#44; France&#46; <span class="elsevierStyleSup"> 5</span>Institute of Social and Preventive Medicine&#44; University of Basel&#44; Basel&#44; Switzerland&#46; <span class="elsevierStyleSup">6</span>Department of Allergy and Respiratory Medicine&#44; University Hospital&#44; Reykjavik&#44; Iceland&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> The recently published Global Initiative for Chronic Obstructive Lung Disease &#40;GOLD&#41; guidelines provide a new staging system for chronic obstructive pulmonary disease &#40;COPD&#41; from mild &#40;stage I&#41; to severe &#40;stage III&#41;&#46; As a new approach&#44; the GOLD guidelines have introduced a stage 0 which represents absence of airflow obstruction but presence of chronic symptoms&#44; e&#46;g&#46; cough and phlegm&#44; and is meant to include subjects &#34;at risk&#34; for developing COPD later in life and to allow intervention while the disease is not yet a health problem&#46; The aim of the present study is&#58; i&#41; to assess the prevalence of COPD severity stages&#44; as defined in the GOLD guidelines&#44; in developed countries&#59; ii&#41; to evaluate if subjects either belonging to stage 0 or to the more severe stages share a common pattern of risk factors and use of health care resources due to respiratory problems&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> For the purposes of the present analysis&#44; we used the data of the European Community Respiratory Health Survey &#40;ECRHS&#41;&#44; which collected information about respiratory health&#44; lung function and a variety of factors known or hypothesised to be associated with COPD in more than 18&#44;000 young adults &#40;20-44 years&#41;&#44; enrolled from 1991 to 1993 in 16 European and other industrialised countries&#46; Data were summarised as prevalence rates &#40;&#37;&#41; with binomial exact 95&#37; confidence intervals&#46; Multinomial regression models were used to assess the association between the GOLD stages &#40;stage 0 and stages I&#43;&#41; and active&#47;passive smoking exposure&#44; respiratory infection in childhood&#44; occupational exposure to vapours&#44; gas&#44; dust or fumes&#44; socio-economic status and gender&#46; The relative risk ratios &#40;RRR&#41; were also adjusted for the effect of the ECRHS country&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> The overall prevalence rates were&#58; 11&#46;8&#37; &#40;95&#37;CI&#58; 11&#46;3-12&#46;3&#37;&#41; for stage 0 &#40;only chronic symptoms&#41;&#44; 2&#46;5&#37; &#40;95&#37;CI&#58; 2&#46;2-2&#46;7&#37;&#41; for COPD-stage I and 1&#46;1&#37; &#40;95&#37;CI&#58; 1&#46;0-1&#46;3&#37;&#41; for COPD-stage II&#46; Moderate-heavy smoking &#40;&#61; 15 pack-years&#41; was significantly associated with both stage 0 &#40;RRR&#61;4&#46;15&#59; 95&#37;CI&#58; 3&#46;55-4&#46;84&#41; and COPD &#40;RRR&#61;4&#46;09&#59; 95&#37;CI&#58; 3&#46;17-5&#46;26&#41;&#44; while COPD patients had a higher likelihood of giving up smoking &#40;RRR&#61;1&#46;39&#59; 95&#37;CI&#58; 1&#46;04-1&#46;86&#41; than stage 0 subjects &#40;RRR&#61;1&#46;05&#59; 95&#37;CI&#58; 0&#46;86-1&#46;27&#41;&#46; Environmental tobacco smoke had the same degree of positive association in both groups&#46; Respiratory infection in childhood and low socio-economic status were significantly and homogeneously associated with both stage 0 and COPD&#44; whereas occupational exposure was significantly associated only with stage 0&#46; All the GOLD stages were characterised by a significantly higher percentage of health care resource users than normal subjects &#40;p&#60;0&#46;001&#41;&#44; with no difference between stage 0 and COPD&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> A considerable percentage of young adults already suffer from COPD&#46; The GOLD stage 0 is characterised by the presence of the main risk factors for COPD and by the same high request for medical assistance&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">289 THE ECONOMIC COST OF CURRENT ASTHMA IN THE ITALIAN YOUNG ADULT GENERAL POPULATION&#46; RESULTS OF THE ITALIAN STUDY ON ASTHMA IN YOUNG ADULTS &#40;ISAYA&#41;</span></p><p class="elsevierStylePara"> Simone Accordini<span class="elsevierStyleSup">1</span>&#44; Roberto de Marco<span class="elsevierStyleSup">1</span>&#44; Alessandra Marinoni<span class="elsevierStyleSup">2</span>&#44; Massimiliano Bugiani<span class="elsevierStyleSup">3</span>&#44; Pietro Pirina<span class="elsevierStyleSup">4</span>&#44; Laura Carrozzi<span class="elsevierStyleSup">5</span>&#44; Rossano Dallari<span class="elsevierStyleSup">6</span>&#44; Orazio Buriani<span class="elsevierStyleSup">7</span>&#44; Simone Gerzeli<span class="elsevierStyleSup">8</span>&#44; et al&#46; en nombre del Grupo&#58; for the ISAYA Study Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>Unit of Epidemiology and Medical Statistics&#44; University of Verona&#44; Verona&#44; Italy&#46; <span class="elsevierStyleSup">2</span>Department of Applied Health Sciences&#44; Faculty of Medicine&#44; University of Pavia&#44; Pavia&#44; Italy&#46; <span class="elsevierStyleSup">3</span>CPA-ASL 4 Unit of Respiratory Medicine&#44; National Health Service&#44; Turin&#44; Italy&#46; <span class="elsevierStyleSup">4</span>Institute of Respiratory Diseases&#44; University of Sassari&#44; Sassari&#44; Italy&#46; <span class="elsevierStyleSup"> 5</span>Cardiopulmonary Department&#44; CNR Institute of Clinical Physiology&#44; Pisa&#44; Italy&#46; <span class="elsevierStyleSup">6</span>Unit of Pulmonology&#44; Hospital of Sassuolo&#44; National Health Service&#44; AUSL Modena&#44; Sassuolo&#44; Italy&#46; <span class="elsevierStyleSup">7</span>National Health Service&#44; AUSL Ferrara&#44; Ferrara&#44; Italy&#46; <span class="elsevierStyleSup">8</span>Department of Applied Statistics and Economics Libero Lenti&#44; University of Pavia&#44; Pavia&#44; Italy&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction&#58;</span> Asthma is a common illness in industrialised countries&#44; with a high socio-economic burden due to productivity losses in young subjects&#44; avoidable deaths&#44; hospitalisation and daily drug treatment&#46; The aim of the present study is&#58; i&#41; to assess the total&#44; direct and indirect costs of current asthma in Italy&#59; ii&#41; to highlight the components of total cost&#59; and iii&#41; to evaluate the determinants of cost variations&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> In 2000&#44; a cost-of-illness &#40;COI&#41; study on the economic impact of current asthma was carried out in the frame of the Italian Study on Asthma in Young Adults &#40;ISAYA&#41;&#44; a multicentre cross-sectional survey on respiratory health in the Italian young adult general population &#40;20-44 years&#41;&#46; The COI study involved 527 current asthmatics with doctor diagnosis screened out of the 15591 responders in 7 Italian centres&#46; Each patient provided detailed information on direct medical expenditures &#40;general practitioner and specialist visits&#44; laboratory tests&#44; use of medicines&#44; Emergency Department visits&#44; hospital admissions&#41;&#44; productivity losses &#40;working days lost according to occupation&#41; and leisure time forgone &#40;days with impaired daily life activities other than work&#41;&#44; which were valued by rates&#44; market prices &#40;pharmacological treatment&#41; and market daily wages according to occupation&#46; Leisure time forgone was valued by the market hourly wage of domestic help&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> In 2000&#44; the mean annual cost per patient was 741 EUR&#58; direct medical expenditures and indirect costs represented 43&#37; &#40;317 EUR&#41; and 57&#37; &#40;424 EUR&#41; of total costs&#44; respectively&#46; The main component of direct medical expenditures was pharmacological treatment &#40;150 EUR&#41;&#44; whereas hospitalisation accounted for less than one fourth of direct costs &#40;73 EUR&#41;&#46; Productivity losses accounted for 63&#37; of indirect costs &#40;266 EUR&#41;&#46; The mean annual cost per patient with poor control of symptoms was more than three times as much as the cost per patient with an optimal control of the disease &#40;1342 vs 378 EUR&#41;&#46; The annual total cost estimated in Italian young adults was of about 650&#44;000&#44;000 EUR&#46; About 50&#37; of total cost was attributable to patients with a poor control of symptoms&#44; who were responsible for about 55&#37; of the total cost due to hospitalisation and 33&#37; of the total cost due to pharmacological treatment&#46; According to a logistic regression analysis&#44; high use of health resources &#40;&#62;350 EUR&#41; was positively associated with sex &#40;females&#41; and negatively associated with the control of symptoms&#59; the risk of production losses and leisure time forgone was lower for &#39;white collars&#39; and decreased according to the control of symptoms&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusions&#58;</span> In 2000&#44; indirect costs were the most relevant component of the total cost of current asthma in Italian young adults&#46; Direct medical expenditures were mainly generated by pharmacological treatment&#46; The failure in controlling symptoms was the main determinant of cost variations&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">290 ASSESSING DIFFERENCES BETWEEN CO-MORBIDITY AND MULTIMORBIDITY</span></p><p class="elsevierStylePara"> Cristina Rius<span class="elsevierStyleSup">1</span>&#44; Gl&#242;ria P&#233;rez<span class="elsevierStyleSup">2</span>&#44; Anna Schiaffino<span class="elsevierStyleSup">3</span>&#44; Esteve Fern&#225;ndez<span class="elsevierStyleSup">3</span>&#44; Rosa Gispert<span class="elsevierStyleSup">4</span></p><p class="elsevierStylePara"><span class="elsevierStyleItalic"><span class="elsevierStyleSup">1</span>CEESCAT&#44; Hospital Universitari Germans Trias i Pujol&#44; Badalona&#44; Espa&#241;a&#46; <span class="elsevierStyleSup">2</span>Programa de salud materno infantil&#44; Departament de Sanitat i Seguretat Social&#44; Barcelona&#44; Espa&#241;a&#46; <span class="elsevierStyleSup">3</span>Servicio de Prevenci&#243;n y Control del C&#225;ncer&#44; Instituto Catal&#225;n de Oncolog&#237;a&#44; Hospitalet de Llobregat&#44; Espa&#241;a&#46; <span class="elsevierStyleSup"> 4</span>Servicio de Informaci&#243;n y Estudios&#44; Departament de Sanitat i Seguretat Social&#44; Barcelona&#44; Espa&#241;a&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Background and Aim&#58;</span> The presence of multiple diseases is an emergent health problem because of the ageing of population and the related increase of the prevalence of chronic diseases&#46; Although there has been increasing interest in research on multiple diseases&#44; during recent years co-morbidity and multi-morbidity are frequently used as synonymous terms&#46; We aimed assess differences between multi-morbidity and co-morbidity when the index disease is stroke in a longitudinal study in Catalonia&#44; Spain&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Methods&#58;</span> We used data from the Catalonian Health Interview Survey Follow-up Study &#40;COHESCA&#41; 1994-1998&#44; a population-based cohort&#46; We obtained complete follow-up from 11&#44;704 participants&#44; and we analysed 7&#44;077 persons aged 40-84 years old&#46; The questionnaire included information for 16 chronic conditions &#40;as present&#47;absent&#41;&#46; The analysis of co-morbidity and multi-morbidity was carried out in three sequential ways&#46; First&#44; we assessed differences in descriptive analysis based on crude prevalence of chronic diseases in multi-morbidity approach and related with stroke in co-morbidity approach&#46; Second&#44; we adjusted logistic regression models to compute the relative risks of death &#40;RR and 95&#37; confidence interval &#91;CI&#93;&#41; according to index disease &#40;stroke&#41; in the co-morbidity approach and all chronic conditions in the multi-morbidity approach&#46; We fitted the models separately for both sexes and we adjusted all models for age&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Results&#58;</span> In multi-morbidity approach crude prevalences&#44; respectively for men and women&#44; are&#58; suffer from stroke 2&#44;5&#37; and 2&#44;1&#37;&#44; suffer from hypertension 21&#44;1&#37; and 29&#44;6&#37;&#44; suffer from hearth diseases 9&#44;8&#37; and 9&#44;7&#37;&#44; suffer from diabetes 7&#44;5&#37; and 8&#44;3&#37; and suffer from depression 8&#37; and 20&#44;2&#37;&#46; In co-morbidity approach&#44; prevalences of suffering from stroke and other chronic diseases&#44; respectively for men and women&#44; are&#58; with hypertension 53&#44;2&#37; and 65&#44;4&#37;&#44; with hearth diseases 41&#44;8&#37; and 49&#44;4&#37;&#44; with diabetes 13&#44;9&#37; and 23&#44;2&#37;&#44; and with depression 27&#44;8&#37; and 41&#44;5&#37;&#46; In the multi-morbidity approach&#44; the RR of death for suffer from stroke is 2&#44;04 &#40;95&#37;CI&#58;1&#44;15-3&#44;62&#41;&#44; for hypertension 1&#44;09 &#40;95&#37;CI 0&#44;8-1&#44;49&#41;&#44; for hearth diseases 1&#44;45 &#40;95&#37;CI 1-2&#44;09&#41;&#44; for diabetes 1&#44;22 &#40;95&#37;CI 0&#44;79-1&#44;87&#41; and for depression 1&#44;24 &#40;95&#37;CI 0&#44;77-2&#44;01&#41; for men&#46; For women&#44; are 3&#44;20 &#40;95&#37;CI 1&#44;76-5&#44;79&#41;&#44; 1&#44;04 &#40;95&#37;CI 0&#44;75-1&#44;44&#41;&#44; 1&#44;49 &#40;95&#37;CI 0&#44;99-2&#44;22&#41;&#44; 2&#44;22 &#40;95&#37;CI 1&#44;49-3&#44;31&#41; and 0&#44;86 &#40;95&#37;CI 0&#44;56-1&#44;32&#41; respectively&#46; In the co-morbidity approach&#44; the RRs of death by stroke adjusted for age and the 4 co-existent diseases is 2&#46;2 &#40;95&#37;CI 1&#44;26-3&#44;86&#41; for men and 3&#44;22 &#40;95&#37;CI 1&#44;81-5&#44;75&#41; for women&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conclusion&#58;</span> Prevalence of multiple chronic diseases in the same person could be expressed in different ways according with objectives and study design&#46; In our study&#44; the use of co-morbidity instead of multi-morbidity provided more accurate information&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">Partially funded by Fondo de Investigaci&#243;n Sanitaria &#40;98&#47;0053-01&#41;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">291 SWEDISH MULTIPLE SCLEROSIS REGISTRY&#46; IT&#39;S CONCEPT&#44; STRUCTURE&#44; PURPOSE AND APPLICATION AREAS</span></p><p class="elsevierStylePara"> Leszek Stawiarz&#44; Jan Hillert&#46; En nombre del Grupo&#58; MS Database Co-ordinating Group</p><p class="elsevierStylePara"><span class="elsevierStyleItalic">Division of Neurology&#44; Karolinska Institute&#44; Huddinge Univ&#46; Hospital&#44; Stockholm&#44; Sweden&#46;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Objectives&#58;</span> The SMS-registry is a solution integrating a concise&#44; standardized clinical description of MS patients accepted nationwide&#44; with the local needs expressed in specialized tests or paraclinical examinations&#46; It supports a specific design with a simple user interface&#44; comprehensive query generator&#44; tools for system management&#44; built-in on-line help&#44; security mechanisms and flexibility in many aspects&#46; The SMS-registry&#44; in its local and web-based versions&#44; has been developed at the Division of Neurology&#44; Huddinge University Hospital&#44; Karolinska Institute in collaboration with the MS Database Co-ordinating Group&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Main purposes of the system&#58;</span> SMS-registry has been designed for clinical and research related purposes&#46; It primarily aims to&#58; <span class="elsevierStyleItalic">1&#41;</span> provide &#34;condensed&#34; patient information helping in clinical settings&#44; <span class="elsevierStyleItalic">2&#41;</span> standardize and ensure the quality registration and clinical handlings&#44; <span class="elsevierStyleItalic">3&#41;</span> guarantee the use of current therapy guidelines in MS treatment&#44; <span class="elsevierStyleItalic">4&#41;</span> evaluate the short and long term effects of MS treatment&#44; <span class="elsevierStyleItalic">5&#41;</span> estimate the quality of life&#44; <span class="elsevierStyleItalic">6&#41;</span> improve the MS-related health care&#46; It can also be&#58; a source of information necessary for different research projects&#59; a base for epidemiological studies&#59; a help in finding the suitable patients to clinical trials&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">System design&#58;</span> The important concept in the design of the Interactive Database system for MS &#40;IDMS&#41; is its modular structure&#46; It is built around a standardized kernel of basic&#44; personal information&#44; with modules of clinical data&#44; immunomodulating treatment and bout events&#46; When an MS patient visits a neurological clinic&#44; the essential information is collected in these modules&#46; The kernel includes description of disease onset&#44; current MS diagnosis&#47;course together with additional&#44; clinically relevant information like current EDSS value&#44; pathologic CSF and MRI&#44; or familial MS&#46; User defined modules have been designed to meet the needs of gathering paraclinical data and collecting information originating from a number of research projects&#46; Selective access to data of different type was an important feature in planning of the system&#46; This resulted in several specialized modules of MRI findings&#44; quality of life&#44; or functional scores proposed by the MS Database Co-ordinating Group&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">Use of IDMS program and SMS registry&#58;</span> The IDMS system is used at all university&#44; neurological clinics in Sweden and at some larger neurological centers&#46; It is offered to all MS-related health institutions&#46; The last gathered nationwide data of October 2002&#44; comprised 4100 patients - approximately 1&#47;3 of the whole expected prevalent MS-population in Sweden&#46; SMS-registry is governed by the MS Database Coordinating Group&#44; consisting of the annually elected&#44; MS-related healthcare personal&#46; SMS-registry is approved by The National Board of Health and Welfare &#40;Socialstyrelsen&#41; together with 50 other quality registries in Sweden&#46; Because of the increasing importance of quality registers in improvement of health care&#44; and all the health-political aspects related to them&#44; the SMS-registry is economically supported by Socialstyrelsen&#46; The activity reports concerning the SMS-registry are annually presented to Socialstyrelsen &#40;http&#58;&#47;&#47;www&#46;sos&#46;se&#47;mars&#47;kvaflik&#46;htm&#41;&#46;</p>"
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Información del artículo
ISSN: 02139111
Idioma original: Inglés
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