• Kristina Arion, Natasha L Orr, Heather Noga, Catherine Allaire, Christina Williams, Mohamed A Bedaiwy, and Paul J Yong.
• Department of Obstetrics and Gynecology, Dalhousie University, Halifax, Canada.
• J Womens Health (Larchmt). 2020 Sep 1; 29 (9): 1209-1215.

Abstract Background: Endometriosis is a complex condition that can negatively affect a woman's quality of life, including her sleep. This study aims to assess the multifactorial variables associated with poorer quality of sleep in women with endometriosis. Materials and Methods: Data from the Endometriosis Pelvic Pain Interdisciplinary Cohort (EPPIC) data registry were analyzed for women who underwent surgery at the BC Women's Center for Pelvic Pain and Endometriosis with histopathological confirmation of endometriosis (June 2015 to June 2017). The primary outcome was quality of sleep preoperatively, from the Chronic Pain Sleep Inventory (0-100 VAS). Bivariate analysis and multivariable linear regression were done to determine any significant associations between preoperative patient variables and overall quality of sleep, based on p-value of 0.05. Results: Two hundred and seventy-five women met the study criteria. Poorer overall quality of sleep was independently associated with poorer functional quality of life (EHP-30) (b = -0.18, p = 0.0026), more depressive symptoms (PHQ-9) (b = -1.62, p < 0.001), and painful bladder syndrome (PBS) (b = -5.82, p = 0.035). This indicates that a 1 point increase in the EHP-30 (worsening quality of life), a 1 point increase in the PHQ-9 (worsening depression), and the presence of PBS increased the primary outcome (i.e., toward poorer quality of sleep) by 0.18, 1.62, and 5.82 points. Conclusions: Poorer quality of sleep in women with endometriosis is associated with poorer quality of life, more depressive symptoms, and bladder pain. Research into interventions that improve sleep is warranted as part of the management of some women with endometriosis.

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