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Gepubliceerd in: Quality of Life Research 5/2009

01-06-2009

Validation and calibration of the SF-36 health transition question against an external criterion of clinical change in health status

Auteurs: Stephanie A. Knox, Madeleine T. King

Gepubliceerd in: Quality of Life Research | Uitgave 5/2009

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Abstract

Purpose

Cross-sectional surveys depend on retrospective health transition questions (HTQ) to estimate recent changes in health status. This paper assesses the validity of the SF-36 HTQ and calibrates its categories against change assessed prospectively on the SF-36 domain scales in a sub-group known to have experienced clinically important changes in health status.

Methods

Adults (n = 9,649) from a longitudinal population survey completed the SF-36 in 2001 and 2002. Prospective measures were calculated as mean changes in SF-36 scale scores adjusted for age and gender, and also expressed as standardised response means. Comparison groups were those who had developed a long-term health condition since the last interview and the HTQ response categories for those who had not developed any new conditions.

Results

Those with a new condition and those without a new condition but who described their health as “somewhat worse” than a year ago had comparable declines in health status on all domain scales except role physical, where those with a new condition experienced a greater decline.

Conclusions

This analysis demonstrates the validity and limitations of the HTQ as a measure of change in population studies. The calibration is useful for interpreting the meaning of the HTQ categories at the group level but not at the individual level.
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Metagegevens
Titel
Validation and calibration of the SF-36 health transition question against an external criterion of clinical change in health status
Auteurs
Stephanie A. Knox
Madeleine T. King
Publicatiedatum
01-06-2009
Uitgeverij
Springer Netherlands
Gepubliceerd in
Quality of Life Research / Uitgave 5/2009
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-009-9467-1

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