TY - JOUR
T1 - Factorial validity and invariance of a survey measuring psychosocial correlates of colorectal cancer screening among African Americans and Caucasians
AU - Tiro, Jasmin A.
AU - Vernon, Sally W.
AU - Hyslop, Terry
AU - Myers, Ronald E.
PY - 2005/12
Y1 - 2005/12
N2 - Background: Psychosocial constructs are widely used to predict colorectal cancer screening and are targeted as intermediate outcomes in behavioral intervention studies. Reliable and valid instruments for measuring general colorectal cancer screening psychosocial constructs are needed; yet, few studies have conducted psychometric analyses. This study replicated a five-factor structure for 16 theory-based, general colorectal cancer screening items measuring salience and coherence, cancer worries, perceived susceptibility, response efficacy, and social influence. In addition, we examined factorial invariance across race and sex. Methods: African American and Caucasian patients (n = 1,413) attending an urban, primary care clinic were included in this study. These individuals completed a baseline survey as part of a colorectal cancer screening intervention trial. Single and multigroup confirmatory factor analyses using maximum-likelihood estimation were done. Results: The five-factor general colorectal cancer screening model provided excellent fit and was invariant across race-sex subgroups. Conclusions: The findings of invariance across sex and race subgroups support the use of these scales to measure group differences.
AB - Background: Psychosocial constructs are widely used to predict colorectal cancer screening and are targeted as intermediate outcomes in behavioral intervention studies. Reliable and valid instruments for measuring general colorectal cancer screening psychosocial constructs are needed; yet, few studies have conducted psychometric analyses. This study replicated a five-factor structure for 16 theory-based, general colorectal cancer screening items measuring salience and coherence, cancer worries, perceived susceptibility, response efficacy, and social influence. In addition, we examined factorial invariance across race and sex. Methods: African American and Caucasian patients (n = 1,413) attending an urban, primary care clinic were included in this study. These individuals completed a baseline survey as part of a colorectal cancer screening intervention trial. Single and multigroup confirmatory factor analyses using maximum-likelihood estimation were done. Results: The five-factor general colorectal cancer screening model provided excellent fit and was invariant across race-sex subgroups. Conclusions: The findings of invariance across sex and race subgroups support the use of these scales to measure group differences.
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U2 - 10.1158/1055-9965.EPI-05-0217
DO - 10.1158/1055-9965.EPI-05-0217
M3 - Article
C2 - 16365000
AN - SCOPUS:30344488461
SN - 1055-9965
VL - 14
SP - 2855
EP - 2861
JO - Cancer Epidemiology Biomarkers and Prevention
JF - Cancer Epidemiology Biomarkers and Prevention
IS - 12
ER -