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Related Experiment Videos

Rethinking and rescoring the SF-12.

David Wilson1, Graeme Tucker, Catherine Chittleborough

  • 1Department of Medicine, University of Adelaide, Queen Elizabeth Hospital, Woodville, South Australia 5011. David.Wilson@dhs.sa.gov.au

Sozial- Und Praventivmedizin
|September 20, 2002
PubMed
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An Australian version of the SF-12 quality-of-life survey was developed and validated. While valid, the US version is recommended for international comparability, using Australian-derived weights.

Area of Science:

  • Health outcomes research
  • Psychometrics
  • Cross-cultural adaptation of health measures

Background:

  • The SF-12 is a widely used health survey.
  • International comparability of health data is crucial.
  • Adaptation of health questionnaires for specific populations is necessary.

Purpose of the Study:

  • To derive and validate an Australian version of the SF-12.
  • To compare the Australian SF-12 with the US version.
  • To assess the utility of the SF-12 for Australian health surveys.

Main Methods:

  • Regression methods and structural equation modelling were used to derive item weights.
  • An Australian SF-12 version was created using Australian population survey data.
  • The derived Australian SF-12 was compared against the US SF-12 and SF-36.

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Main Results:

  • The Australian SF-12 explained 94% of the variance in SF-36 physical and mental component summaries.
  • High agreement was observed between the SF-12 (Australian and US) and SF-36 summary scores.
  • The derived Australian version demonstrated validity.

Conclusions:

  • A valid Australian version of the SF-12 can be derived.
  • The US version of the SF-12 is recommended for international comparability.
  • Item weights derived from structural equation modelling should be utilized for the Australian context.