The eight-item modified Medical Outcomes Study Social Support Survey: psychometric evaluation showed excellent performance.
- Moser A Institute of Social and Preventive Medicine (ISPM), University of Bern, Finkenhubelweg 11, CH 3012 Bern, Switzerland.
- Stuck AE
- Silliman RA
- Ganz PA
- Clough-Gorr KM
- 2012-07-24
Published in:
- Journal of clinical epidemiology. - 2012
Aged
Aged, 80 and over
Breast Neoplasms
Chronic Disease
Cross-Sectional Studies
Factor Analysis, Statistical
Female
Geriatric Assessment
Humans
Longitudinal Studies
Middle Aged
Needs Assessment
Psychometrics
Reproducibility of Results
Social Support
Surveys and Questionnaires
United States
English
OBJECTIVE
Evaluation and validation of the psychometric properties of the eight-item modified Medical Outcomes Study Social Support Survey (mMOS-SS).
STUDY DESIGN AND SETTING
Secondary analyses of data from three populations: Boston breast cancer study (N=660), Los Angeles breast cancer study (N=864), and Medical Outcomes Study (N=1,717). The psychometric evaluation of the eight-item mMOS-SS compared performance across populations and with the original 19-item Medical Outcomes Study Social Support Survey (MOS-SS). Internal reliability, factor structure, construct validity, and discriminant validity were evaluated using Cronbach's alpha, principal factor analysis (PFA), and confirmatory factor analysis (CFA), Spearman and Pearson correlation, t-test and Wilcoxon rank sum tests.
RESULTS
mMOS-SS internal reliability was excellent in all three populations. PFA factor loadings were similar across populations; one factor >0.6, well-discriminated two factor (instrumental/emotional social support four items each) >0.5. CFA with a priori two-factor structure yielded consistently adequate model fit (root mean squared errors of approximation 0.054-0.074). mMOS-SS construct and discriminant validity were similar across populations and comparable to MOS-SS. Psychometric properties held when restricted to women aged ≥ 65 years.
CONCLUSION
The psychometric properties of the eight-item mMOS-SS were excellent and similar to those of the original 19-item instrument. Results support the use of briefer mMOS-SS instrument; better suited to multidimensional geriatric assessments and specifically in older women with breast cancer.
Evaluation and validation of the psychometric properties of the eight-item modified Medical Outcomes Study Social Support Survey (mMOS-SS).
STUDY DESIGN AND SETTING
Secondary analyses of data from three populations: Boston breast cancer study (N=660), Los Angeles breast cancer study (N=864), and Medical Outcomes Study (N=1,717). The psychometric evaluation of the eight-item mMOS-SS compared performance across populations and with the original 19-item Medical Outcomes Study Social Support Survey (MOS-SS). Internal reliability, factor structure, construct validity, and discriminant validity were evaluated using Cronbach's alpha, principal factor analysis (PFA), and confirmatory factor analysis (CFA), Spearman and Pearson correlation, t-test and Wilcoxon rank sum tests.
RESULTS
mMOS-SS internal reliability was excellent in all three populations. PFA factor loadings were similar across populations; one factor >0.6, well-discriminated two factor (instrumental/emotional social support four items each) >0.5. CFA with a priori two-factor structure yielded consistently adequate model fit (root mean squared errors of approximation 0.054-0.074). mMOS-SS construct and discriminant validity were similar across populations and comparable to MOS-SS. Psychometric properties held when restricted to women aged ≥ 65 years.
CONCLUSION
The psychometric properties of the eight-item mMOS-SS were excellent and similar to those of the original 19-item instrument. Results support the use of briefer mMOS-SS instrument; better suited to multidimensional geriatric assessments and specifically in older women with breast cancer.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1016/j.jclinepi.2012.04.007
- PMID 22818947
- Persistent URL
- https://folia.unifr.ch/global/documents/162792
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