Induced abortion as a risk factor for subsequent fetal loss.
The relation between past induced abortions and subsequent fetal loss is still unclear. We report a case-control study with 331 cases of first spontaneous abortion and 993 controls with no previous spontaneous abortion and a normal pregnancy at the same period of pregnancy. In comparison with primigravid women, the odds ratio for a fetal loss in the current one was 1.41 [95% confidence interval (CI) = 0.81-2.43] among women with one previous pregnancy ending in induced abortion, 4.43 (95% CI = 1.46-13.36) among those with two previous induced abortions out of two pregnancies, and 1.35 (95% CI = 0.64-2.82) among women with three or more previous pregnancies ending in one or more induced abortions.
Infante-Rivard
C
C
Department of Occupational Health, Faculty of Medicine, McGill University, Montréal, Québec, Canada.
Gauthier
R
R
D000028:Abortion, Induced / Q000009:adverse effects*; D000022:Abortion, Spontaneous / Q000209:etiology*; D016022:Case-Control Studies; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D016017:Odds Ratio; D011247:Pregnancy; D012044:Regression Analysis; D012307:Risk Factors; D013997:Time Factors