American Journal of Epidemiology Vol. 117, No. 3: 305-308
Copyright © 1983 by The Johns Hopkins University School of Hygiene and Public Health
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SPONTANEOUS ABORTION AND INDUCED ABORTION: AN ADJUSTMENT FOR THE PRESENCE OF INDUCED ABORTION WHEN ESTIMATING THE RATE OF SPONTANEOUS ABORTION FROM CROSS-SECTIONAL STUDIES1
Send reprint requests to Dr. Susser at the Sergievsky Center, Health Sciences, Columbia U., 630 West 168th St., New York, NY 10032.
Susser, E. (Sergievsky Center, Columbia U., New York, NY 10032). Spontaneous abortion and induced abortion: an adjustment for the presence of induced abortion when estimating the rate of spontaneous abortion from cross-sectional studies. Am J Epidemiol 1983; 117: 3058.
The existence of high rates of induced abortion in the population may distort currently employed measures of the rate of spontaneous abortion. Since the frequency of induced abortion varies greatly between and within populations, an appropriate correction is needed to restore the comparability of spontaneous abortion rates. A simplified estimate of the "true" rate of spontaneous abortion is proposed. This statistic yields a sufficient approximation for most purposes.
abortion; abortion,induced; epidemiologic methods; statistics
1College of Physicians and Surgeons and Gertrude H. Sergievsky Center, Columbia U., New York, NY.
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