Measuring physical and mental health using the SF-12: implications for community surveys of mental health
Measuring physical and mental health using the SF-12: implications for community surveys of mental health
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DOI:
10.1111/j.1440-1614.2006.01886.x
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发表时间:
2006-09-01
影响因子:
4.6
通讯作者:
Jorm, Anthony F.
中科院分区:
文献类型:
--
作者:
Windsor, Timothy D.;Rodgers, Bryan;Jorm, Anthony F.
Objective: The effects of using different approaches to scoring the SF-12 summary scales of physical and mental health were examined with a view to informing the design and interpretation of community-based survey research.Method: Data from a population-based study of 7485 participants in three cohorts aged 20-24, 40-44 and 60-64 years were used to examine relationships among measures of physical and mental health calculated from the same items using the SF-12 and RAND-12 approaches to scoring, and other measures of chronic physical conditions and psychological distress.Results: A measure of physical health constructed using the RAND-12 scoring showed a monotonic negative association with psychological distress as measured by the Goldberg depression and anxiety scales. However, a non-monotonic association was evident in the relationship between SF-12 physical health scores and distress, with very high SF-12 physical health scores corresponding with high levels of distress. These relationships highlight difficulties in interpretation that can arise when using the SF-12 summary scales in some analytical contexts.Conclusions: It is recommended that community surveys that measure physical and mental functioning using the SF-12 items generate summary scores using the RAND-12 protocol in addition to the SF-12 approach. In general, researchers should be wary of using factor scores based on orthogonal rotation, which assumes that measures are uncorrelated, to represent constructs that have an actual association.