Sleep and quality of life in breast cancer patients.

This study described sleep in a heterogeneous sample of breast cancer patients using the Pittsburgh Sleep Quality Index (PSQI) and examined the relation between sleep disturbance and health-related quality of life as measured by the Rand 36-Item Health Survey. Chemotherapy and radiation therapy were explored as predictors of sleep disturbance in breast cancer patients, and the sleep characteristics of breast cancer patients were compared to the sleep characteristics of a sample of medical patients with general medical conditions. Results showed that 61% of breast cancer patients had significant sleep problems.