Predictors of social support and psychological distress in women with breast cancer.

This investigation sought to understand previous well-cited and worrisome findings that women treated for breast cancer with breast-conserving surgery compared to mastectomy experience less social support and more mood disturbance, and that social support from significant others erodes over time. Ninety-three women with breast cancer and a subset of their partners completed assessments at the time of surgical treatment and at 3 and 13 months post-treatment. Contrary to the previous findings, type of surgical treatment was not related to perceptions of social support or psychological functioning. Perceptions of social support and psychological distress decreased over time, and the discrepancy between recipients' and providers' judgments of available support increased over time. Low levels of physical functioning led to relative increases in social support, whereas high levels of psychological distress led to relative decreases in social support. Social support as rated by patients (but not their partners) was a significant predictor of changes in psychological distress.