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Adaptation and Initial Psychometric Evaluation of an Informed Prostate Cancer Screening Decision Self-Efficacy Scale for African-American Men

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Abstract

Objective

To evaluate whether computer-based prostate cancer screening decision aids enhance decision self-efficacy for African-American men, culturally relevant and reliable measures are needed. However, limited psychometric evidence exists on the health-related decision self-efficacy of African-American men. This study describes the development and psychometric evaluation of the 11-item Informed Prostate Cancer Screening Decision Self-Efficacy Scale among 354 African-American men.

Methods

Exploratory factor analysis was conducted with maximum-likelihood estimation and polychoric correlations followed by Promax and Varimax rotations.

Results

Exploratory factor analysis yielded a one-factor, 11-item model of the modified scale with excellent internal consistency reliability at 0.95 and factor loadings ranging from 0.70 to 0.90. Both parallel analysis and a scree plot confirmed the retention of one factor, and the standardized root mean square residual (0.06) indicated that the factor structure explained most of the correlations.

Conclusions

Findings suggest the one-factor, 11-item Informed Prostate Cancer Screening Decision Self-Efficacy Scale has excellent psychometric properties and utility in reliably measuring health-related decision self-efficacy in African-American men. Future research is needed to confirm this factor structure among socio-demographically diverse African Americans.

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Acknowledgments

This study was funded by the University of South Carolina’s Office of the Vice President for Research and an American Cancer Society Institutional Research Grant from the University of South Carolina’s School of Pharmacy.

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Authors and Affiliations

  1. College of Social Work, University of South Carolina, 1512 Pendleton Street, Suite 106, Columbia, SC, USA

    Otis L. Owens

  2. College of Social Work, University of South Carolina, 1514 Pendleton Street, Suite 302, Columbia, SC, USA

    Nikki R. Wooten

  3. College of Nursing, University of South Carolina, 1601 Greene Street, Suite 323, Columbia, SC, USA

    Abbas S. Tavakoli

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  1. Otis L. Owens
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Owens, O.L., Wooten, N.R. & Tavakoli, A.S. Adaptation and Initial Psychometric Evaluation of an Informed Prostate Cancer Screening Decision Self-Efficacy Scale for African-American Men. J. Racial and Ethnic Health Disparities 7, 746–759 (2020). https://doi.org/10.1007/s40615-020-00702-0

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  • DOI: https://doi.org/10.1007/s40615-020-00702-0

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