reducing sun exposure for prevention of skin cancers: factorial invariance and reliability of the self-efficacy scale for sun protection

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ID: 159847
2015
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Abstract
The Self-Efficacy Scale for Sun Protection consists of two correlated factors with three items each for Sunscreen Use and Avoidance. This study evaluated two crucial psychometric assumptions, factorial invariance and scale reliability, with a sample of adults (N=1356) participating in a computer-tailored, population-based intervention study. A measure has factorial invariance when the model is the same across subgroups. Three levels of invariance were tested, from least to most restrictive: (1) Configural Invariance (nonzero factor loadings unconstrained); (2) Pattern Identity Invariance (equal factor loadings); and (3) Strong Factorial Invariance (equal factor loadings and measurement errors). Strong Factorial Invariance was a good fit for the model across seven grouping variables: age, education, ethnicity, gender, race, skin tone, and Stage of Change for Sun Protection. Internal consistency coefficient Alpha and factor rho scale reliability, respectively, were .84 and .86 for Sunscreen Use, .68 and .70 for Avoidance, and .78 and .78 for the global (total) scale. The psychometric evidence demonstrates strong empirical support that the scale is consistent, has internal validity, and can be used to assess population-based adult samples.
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babbin2015journalreducing Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Steven F. Babbin;Hui-Qing Yin;Joseph S. Rossi;Colleen A. Redding;Andrea L. Paiva;Wayne F. Velicer
Journal case reports in hematology
Year 2015
DOI
10.1155/2015/862732
URL
http://dx.doi.org/10.1155/2015/862732
Keywords
neoplasms Oncology including cancer and carcinogens tumors

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