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对口服避孕药的危害性及益处的评价应通过大规模的随机对照试验得出,但这种方法有实际困难,且奏效甚微。本文根据流行病学的病例-对照或群组研究介绍了复方口服避孕药(COC)的利弊。
Evaluation of the risks and benefits of oral contraceptives should be based on large-scale randomized controlled trials, but this method has practical difficulties, and with little effect. This article presents the pros and cons of compound oral contraceptives (COCs) based on epidemiological case-control or cohort studies.