Sleep quality is associated with Disability and Quality of life in breast cancer survivors: a cross‐sectional pilot study

Purpose To evaluate the sleep quality and its association with disability, fatigue and quality of life of breast cancer survivors. Methods This is a cross‐sectional pilot study developed with breast cancer survivors. The data collection instruments consisted of general and clinical information on the disease and the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0); Pittsburgh Sleep Quality Index (PSQI); Functional Assessment of Chronic Illness Therapy‐Fatigue (FACIT‐F); and Disabilities of the arm and Shoulder (DASH). Descriptive statistical analysis, correlation tests, tests for means comparison and linear regression were performed. Cohen's d analysed the effect size. The significance was set at p