Development and psychometric testing of the coping with breast cancer threat instrument.

Women with a positive family history of breast cancer have a higher relative breast cancer risk. Research pertinent to this "at-risk" population has focused primarily on the early detection measures of breast self-exam, clinical breast exam, and mammography. Other specific primary prevention coping behaviors have received little research attention and, while there are instruments that measure general coping behaviors in the face of illness threat, there are no known instruments that measure coping behaviors specific to dealing with breast cancer threat. This study tested the psychometric properties of the Coping with Breast Cancer Threat instrument (CBCT). The CBCT was designed to measure primary prevention and early detection coping strategies used by women with family histories of breast cancer in response to their appraised breast cancer threat. The tool's format was modeled after the Jalowiec Coping Scale (JCS) and included use and effectiveness scales. Internal consistency reliabilities and content and construct validity of the CBCT were assessed in a sample of 209 women with a family history of breast cancer. Alpha coefficients for the CBCT's total use and effectiveness scales were .70 and .76, respectively. Principal components factor analysis with a varimax rotation revealed three conceptually relevant subcales that accounted for 52% of the variance in breast cancer threat coping behaviors. The CBCT was shown to be a reliable and valid measure of coping with breast cancer threat in a well-educated, European Amercian sample of middle-aged women.