ArticleHealth and quality of life outcomes2022
Correlated physical and mental health composite scores for the RAND-36 and RAND-12 health surveys: can we keep them simple?
Article in Health and quality of life outcomes, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed.
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- Health-Related Quality of Life and Associated Factors in Patients with Heart Failure Across Three Ejection Fraction Categories: A Two-Center Cross-Sectional Study.Healthcare (Basel, Switzerland) · 2026Article
- Health-related quality of life in parents of adolescents in 2019, 2021 and 2023.BMC pediatrics · 2026Article
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- Patient-reported outcomes and disease activity in giant cell arteritis: a longitudinal registry-based study.Rheumatology (Oxford, England) · 2026Article
- Health-related quality of life and tobacco and alcohol consumption in Leber hereditary optic neuropathy in Sweden.Frontiers in ophthalmology · 2026Article
- Efficacy of Cognitive Behavioral Therapy Combined with Exercise in Patients with Chronic Pain: A Systematic Review and Meta-Analysis.Journal of pain research · 2026Review
- Article
- Beyond the physical: exploring the complexities of Women's health after severe perineal trauma-a cross-sectional study on predictors of health-related quality of life in Sweden.Frontiers in global women's health · 2026Article
- A prospective multicenter register study exploring health-related quality of life in women with Sjögren's disease during pregnancy.Frontiers in global women's health · 2026Article
- Impact of health literacy and general self-efficacy on surgical outcomes 2 years after bariatric surgery.Clinical obesity · 2025Article
- Exploring Biases of Large Language Models in the Field of Mental Health: Comparative Questionnaire Study of the Effect of Gender and Sexual Orientation in Anorexia Nervosa and Bulimia Nervosa Case Vignettes.JMIR mental health · 2025Article
- Development of updated population norms for the SF-36 for Hungary and comparison with 1997-1998 norms.Health and quality of life outcomes · 2025Article
- Health-related quality of life and associated factors among older refugees from Nagorno-Karabakh residing in Kotayk province of Armenia.Frontiers in public health · 2025Article
- The relationship between resting metabolic rate and quality of life is moderated by age and body composition in women: a cross-sectional study.BMC women's health · 2024Article
- The Effect of Spacer Treatment of Infected Hip and Knee Arthroplasties on Patients' Mental Health: A Narrative Review of the Literature.Healthcare (Basel, Switzerland) · 2024Review
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Authors and funding
8 authors.
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Abstract
backgroundThe RAND-36 and RAND-12 (equivalent to versions 1 of the SF-36 Health Survey and SF-12 Health Survey, respectively) are widely used measures of health-related quality of life. However, there are diverging views regarding how to create the physical health and mental health composite scores of these questionnaires. We present a simple approach using an unweighted linear combination of subscale scores for constructing composite scores for physical and mental health that assumes these scores should be free to correlate. The aim of this study was to investigate the criterion validity and convergent validity of these scores.
methodsWe investigated oblique and unweighted RAND-36/12 composite scores from a random sample of the general Norwegian population (N = 2107). Criterion validity was tested by examining the correlation between unweighted composite scores and weighted scores derived from oblique principal component analysis. Convergent validity was examined by analysing the associations between the different composite scores, age, gender, body mass index, physical activity, rheumatic disease, and depression.
resultsThe correlations between the composite scores derived by the two methods were substantial (r = 0.97 to 0.99) for both the RAND-36 and RAND-12. The effect sizes of the associations between the oblique versus the unweighted composite scores and other variables had comparable magnitudes.
conclusionThe unweighted RAND-36 and RAND-12 composite scores demonstrated satisfactory criterion validity and convergent validity. This suggests that if the physical and mental composite scores are free to be correlated, the calculation of these composite scores can be kept simple.
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