在近期出版的《妇产科学》杂志上刊登的一项病例对照研究的结果显示,体重指数(BMI)较大可增加口服避孕药失败的风险;该结果与其他有关口服避孕药(OC)的研究结果相一致。来自于美国西雅图华盛顿大学的Victoria L.Holt博士及其同事对此强调指出,虽然研究结果已证实意外妊娠的不良结果很严重,但有关口服避孕药失败的生物学危险因素的研究依然进行的很少。最近的几项研究结果显 A case-control study published in the recently published issue of Obstetrics and Gynecology found that a larger body mass index (BMI) increases the risk of failure of oral contraceptives; this is in contrast to other OCs The findings are consistent. Victoria L. Holt, MD, from the University of Washington, Seattle, and colleagues emphasized that while the results of the study have confirmed the unpleasant consequences of unwanted pregnancies, the study of biological risk factors for the failure of oral contraceptives is still ongoing less. Several recent studies have shown