Cited by 412Health Systems, Economic Evaluations, Quality of LifePsychometric Methodologies and TestingMusculoskeletal pain and rehabilitation

Correlated physical and mental health summary scores for the SF-36 and SF-12 Health Survey, V.1

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Farivar, Sepideh S, Cunningham, William E, Hays, Ron D·2007·Health and Quality of Life Outcomes

Abstract

BACKGROUND: The SF-36 and SF-12 summary scores were derived using an uncorrelated (orthogonal) factor solution. We estimate SF-36 and SF-12 summary scores using a correlated (oblique) physical and mental health factor model. METHODS: We administered the SF-36 to 7,093 patients who received medical care from an independent association of 48 physician groups in the western United States. Correlated physical health (PCSc) and mental health (MCSc) scores were constructed by multiplying each SF-36 scale z-score by its respective scoring coefficient from the obliquely rotated two factor solution. PCSc-12 and MCSc-12 scores were estimated using an approach similar to the one used to derive the original SF-12 summary scores. RESULTS: The estimated correlation between SF-36 PCSc and MCSc scores was 0.62. There were far fewer negative factor scoring coefficients for the oblique factor solution compared to the factor scoring coefficients produced by the standard orthogonal factor solution. Similar results were found for PCSc-12, and MCSc-12 summary scores. CONCLUSION: Correlated physical and mental health summary scores for the SF-36 and SF-12 derived from an obliquely rotated factor solution should be used along with the uncorrelated summary scores. The new scoring algorithm can reduce inconsistent results between the SF-36 scale scores and physical and mental health summary scores reported in some prior studies.(Subscripts C = correlated and UC = uncorrelated).

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  • Prior factor analyses of SF-36 scale scores supported two underlying factors: physical health defined mainly by physical functioning, pain, and physical role limitations, and mental health reflected mainly by emotional well-being and emotional role limitations.

    “Factor analyses of scale scores for the SF-36 health survey, provided strong support for two underlying factors with physical health defined primarily by measures of physical functioning, pain, and role limitations due to physical health problems, and by mental health reflected primarily by measures of emotional well-being and role limitations caused by emotional problems [17–18].”
  • Allowing the underlying physical and mental health summary scores to be correlated reflects the reality of health and removes the inconsistency between scale scores and summary measures.

    “Allowing the underlying physical and mental health summary scores to be correlated reflects the reality of health and eliminates the inconsistency between scale scores and summary measures [17].”

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Research works printed but not linked: 2

  1. Taft C Reply to Drs Ware and Kosinski Qual Life Res 2001 10 415 420 10.1023/A:1012552211996 · DOI · Paper page
  2. Hays RD Morales LS The RAND-36 measure of health-related quality of life Ann Med 2001 33 350 357 11491194

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Authors
Farivar, S. S., Cunningham, W. E., & Hays, R. D.
Affiliations
  • Amgen (United States) (US)
  • University of California, Los Angeles (US)
  • RAND Corporation (US)
Corresponding author
Farivar, Sepideh S
Venue
Health and Quality of Life Outcomes
Published
2007-09-07
Volume
5
Issue
1
Pages
54-54
ISSN
1477-7525 (ISSN-L)
OpenAlex
W2097456882
Cited by
412
References
15
Citations by year
2026: 19 · 2025: 35 · 2024: 40 · 2023: 30 · 2022: 33 · 2021: 43 · 2020: 35 · 2019: 29 · 2018: 23 · 2017: 28 · 2016: 17 · 2015: 18 · 2014: 7 · 2013: 10 · 2012: 7
FWCI
22.29
Type
journal article
Language
en
Open access
Locations
  • Health and Quality of Life Outcomes (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Institutes of Health (5p20md000148-05)
  • National Institute on Aging (AG20679-01, P01AG020679)
  • National Institute on Minority Health and Health Disparities (P20-MD00148-01, P20-MD000148)
Topics
  • Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Health Systems, Economic Evaluations, Quality of Life
  • Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
  • Health Sciences › Medicine › Pharmacology › Musculoskeletal pain and rehabilitation
Keywords
SF-36, SF-12, health-related quality of life, patient-reported outcomes
MeSH terms
Adolescent, Adult, Algorithms, Female, Health Services Accessibility, Health Status Indicators, Humans, Independent Practice Associations, Male, Mental Health, Middle Aged, Quality of Life, Surveys and Questionnaires, United States, Utilization Review, Sickness Impact Profile

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