Epidemiological characteristics in women with and without endometriosis in the Yale series
This retrospective study identified lower body weight, alcohol use, early menarche, shorter cycles, heavier periods, and fewer prior pregnancies as risk factors for endometriosis, with pelvic pain and a family history of cancer also associated.
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This retrospective case-control study analyzed associations between demographic factors, menstrual/reproductive history, and clinical characteristics among 535 women with laparoscopically or laparotomically confirmed endometriosis and 200 infertile women without endometriosis, using uniformly collected medical-record data and χ² and Mann–Whitney U tests. Women with endometriosis had lower body weight, reported alcohol use more often, showed earlier menarche, shorter cycle length, and heavier menstrual cycles, and experienced pelvic pain (79.1%), dysmenorrhea (70.2%), and dyspareunia (49.5%) at significantly higher frequencies than controls (P < 0.001). Compared with women seeking infertility care without endometriosis, the endometriosis group reported fewer prior pregnancies and fewer elective and ectopic pregnancies, and they were more likely to report a family history of cancer (χ² = 78.2; P < 0.001). The study was limited by its retrospective design and reliance on existing records for exposure and symptom information. This paper is centrally about endometriosis — it characterizes epidemiologic and clinical differences between women with and without endometriosis in the Yale series.
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