The Relation of Endometriosis to Menstrual Characteristics, Smoking, and Exercise

摘要: We compared menstrual characteristics and constitutional factors in 268 white women with primary infertility due to endometriosis 3,794 admitted for delivery at seven collaborating hospitals from 1981 1983. Adjusting confounding factors, including location, age, religion, education, short-cycle lengths (≤27 days) longer flow (greater than or equal one week) had more double the risk cycle shorter duration of flow. There was a trend increasing be associated pain. these characteristics, we found decreased smoking exercise that largely confined who began either habit an early age were heavier smokers strenuous exercisers. conclude may relate predispose greater pelvic contamination products influence endogenous hormonal levels. (JAMA1986;255:1904-1908)