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        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">The Short Form-36 Health Survey &#40;SF-36&#41; is one of the most widely used and evaluated generic health-related quality of life &#40;HRQL&#41; questionnaires&#46; After almost a decade of use in Spain&#44; the present article critically reviews the content and metric properties of the Spanish version&#44; as well as its new developments&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p class="elsevierStyleSimplePara elsevierViewall">A review of indexed articles that used the Spanish version of the SF-36 was performed in Medline &#40;PubMed&#41;&#44; the Spanish bibliographic databases IBECS and IME&#46; Articles that provided information on the measurement model&#44; reliability&#44; validity&#44; and responsiveness to change of the instrument were selected&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Seventy-nine articles were found&#44; of which 17 evaluated the metric characteristics of the questionnaire&#46; The reliability of the SF-36 scales was higher than the suggested standard &#40;Cronbach&#39;s alpha&#41; of 0&#46;7 in 96&#37; of the evaluations&#46; Grouped evaluations obtained by meta-analysis were higher than 0&#46;7 in all cases&#46; The SF-36 showed good discrimination among severity groups&#44; moderate correlations with clinical indicators&#44; and high correlations with other HRQL instruments&#46; Moreover&#44; questionnaire scores predicted mortality and were able to detect improvement due to therapeutic interventions such as coronary angioplasty&#44; benign prostatic hyperplasia surgery&#44; and non-invasive positive pressure home ventilation&#46; The new developments &#40;normbased scoring&#44; version 2&#44; the SF-12 and SF-8&#41; improved both the metric properties and interpretation of the questionnaire&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">The Spanish version of the SF-36 and its recently developed versions is a suitable instrument for use in medical research&#44; as well as in clinical practice&#46;</p>"
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