Psychometric properties of the mammography self-efficacy and fear of breast cancer scales in Iranian women

Mahdi Moshki, Shole Shahgheibi, Parvaneh Taymoori, Amjad Moradi, Deam Roshani, Cheryl L. Holt

Research investigating mammography screening has often reported low mammography self-efficacy and breast cancer fear contribute to underutilization of mammography. This study aimed to examine the reliability and validity of Champion's Mammography Self-efficacy Scale (CMSS) and Champion's Breast Cancer Fear Scale (CBCFS) in a sample of Iranian women. The adapted instruments were administered to a community sample of 482 women aged 40 years or older. They inhibited in Sanandaj, Iran. Cronbach's α coefficients, item-total, and test-retest correlations were used to assess the reliability of the scales. Confirmatory factor analysis was applied to assess construct validity. The α coefficients for the Farsi 14-item CMSS and 8-item BCFS were .87 and.95, respectively. In terms of the CMSS confirmatory factor analysis, the proportion of x (2)/df was 2.4, Comparative Fit Index (CFI) = 0.93, Tucker Lewis Index (TLI) = 0.96 providing a strong fit to the data induced by two-factor model. With regard to CBCFS, x (2)/df was 86.33, CFI =0.99, and TLI =0.99 supporting one-factor model. The CMSS and CBCFS exhibited strong initial psychometric properties; therefore, they are recommended to understand women's breast cancer screening behaviors better.