Elsevier

Social Science & Medicine

Volume 41, Issue 10, November 1995, Pages 1349-1358
Social Science & Medicine

The Swedish SF-36 Health Survey—I. Evaluation of data quality, scaling assumptions, reliability and construct validity across general populations in Sweden

https://doi.org/10.1016/0277-9536(95)00125-QGet rights and content

Abstract

We document the applicability of the SF-36 Health Survey, which was translated into Swedish using methods later adopted by the International Quality of Life Assessment (IQOLA) Project procedures. To test its appropriateness for use in Sweden, it was administered through mail-out/mail-back questionnaires in seven general population studies with an average response rate of 68%. The 8930 respondents varied by gender (48.2% men), age (range 15–93 years, mean age 42.7), marital status, education, socio-economic status, and geographical area. Psychometric methods used in the evaluation of the SF-36 in the U.S. were replicated. Over 90 % of respondents had complete items for each of the eight SF-36 scales, although more missing data were observed for subjects 75 years and over. Scale scores could be computed for the vast majority of respondents (95% and over); slightly fewer in the oldest subgroup. Item-internal consistency was consistently high across socio-demographic subgroups and the eight scales. Most reliability estimates exceeded the 0.80 level. The highest reliability was observed for the Bodily Pain Scale where all subgroups met the 0.90 level recommended for individual comparisons; coefficients at or above 0.90 were also observed in most subgroups for the Physical Functioning Scale. Tests of scaling assumptions including hypothesized item groupings, which reflect the construct validity of scales, were consistently favorable across subgroups, although lower rates were noted in the oldest age group. In conclusion, these studies have yielded empirical evidence supporting the feasibility of a non-English language reproduction of the SF-36 Health Survey. The Swedish SF-36 is ready for further evaluation.

References (23)

  • L.-O. Persson et al.

    Mood and somatic symptoms

    J. Psychosom. Res.

    (1987)
  • N.K. Aaronson et al.

    International quality of life assessment (IQOLA) project

    Quality Life Res.

    (1992)
  • D.L. Patrick et al.

    Measurement of health status in the 1990s

    Ann. Rev. publ. Hlth

    (1990)
  • J.E. Ware et al.

    The MOS 36-item short-form health survey (SF-36): I. Conceptual framework and item selection

    Med. Care

    (1992)
  • C.A. McHorney et al.

    The MOS-item short-form health survey (SF-36): III. Tests of data quality, scaling assumptions, and reliability across diverse patient groups

    Med. Care

    (1994)
  • J.E. Ware et al.

    SF-36 Health Survey

  • J.E. Brazier et al.

    Validating the SF-36 health survey questionnaire: new outcome measure for primary care

    Br. med. J.

    (1992)
  • C. Jenkinson et al.

    Short form 36 (SF 36) health survey questionnaire: normative data for adults of working age

    Br. med. J.

    (1993)
  • A.M. Garratt et al.

    The SF 36 health survey questionnaire: an outcome measure suitable for routine use within the NHS?

    Br. Med. J.

    (1993)
  • J.E. Ware

    Measuring patients' views: the optimum outcome measure

    SF 36: a valid, reliable assessment of health from the patient's point of view

    Br. med. J.

    (1993)
  • M. Sullivan

    Livskvalitetsmätning

    Nytt generellt och nytt tumörspecifikt formulär för utvärdering och planering presenteras

    Läkartidningen

    (1994)
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