Bracken M B, Bryce-Buchanan C, Srisuphan W, Holford T R, Silten R
Am J Perinatol. 1986 Apr;3(2):84-91. doi: 10.1055/s-2007-999839.
A cohort of 3110 women anticipating delivery were interviewed after their first prenatal visit at private obstetric practices and HMOs in Connecticut. In all 19.57% reported a prior induced abortion. The research participants were followed to determine whether the pregnancy was miscarried or delivered. In all, 2.19% miscarried in the late first or second trimester. The association of a prior induced abortion on risk for late miscarriage was analyzed by pregnancy history. Women who aborted their first pregnancy had no increased risk (RR = 0.56, 95% CI = 0.16, 1.92) of miscarriage compared with women pregnant for the first time, or compared with women experiencing their second pregnancy after delivering the first (RR = 0.69, 95% CI = 0.18, 2.60). No evidence was found for an increased risk of multiple induced abortion on subsequent miscarriage.
对康涅狄格州私立产科诊所和健康维护组织中3110名预计分娩的女性在首次产前检查后进行了访谈。总共19.57%的女性报告曾有过人工流产史。对研究参与者进行随访，以确定妊娠是流产还是分娩。总计2.19%的女性在孕早期晚期或孕中期流产。根据妊娠史分析既往人工流产与晚期流产风险之间的关联。与首次怀孕的女性相比，首次怀孕后进行人工流产的女性流产风险并未增加（相对危险度=0.56，95%可信区间=0.16，1.92）；与首次分娩后再次怀孕的女性相比，其流产风险也未增加（相对危险度=0.69，95%可信区间=0.18，2.60）。未发现多次人工流产会增加后续流产风险的证据。
