Sleep quality in women with systemic lupus erythematosus: contributing factors and effects on health-related quality of life

Aim Sleep quality disturbances are common in patients with systemic lupus erythematosus (SLE). We evaluated sleep quality and its contributors in women with SLE. Also we evaluated the effects of sleep quality disturbance on patients' health‐related quality of life (HRQoL). Methods Sleep quality was assessed in 77 women with SLE (age 36.5 ± 10.1 years) using the Pittsburgh Sleep Quality Index (PSQI). Disease activity and cumulative disease damage were assessed with standard indices. Patients completed the Hospital Anxiety and Depression Scale and LupusQoL. Univariate and multivariate analyses were performed to find contributors of poor sleep quality and association of sleep quality with HRQoL. Results Poor sleep quality was present in 44 patients (57.1%). Poor sleepers were older (P = 0.015) and had higher body mass index (P = 0.027) and more severe anxiety (P