American Journal of Epidemiology Vol. 112, No. 3: 395-403
Copyright © 1980 by The Johns Hopkins University School of Hygiene and Public Health
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CESAREAN SECTIONS IN UPSTATE NEW YORK, 196819781
1 New York State Dept. of Health, Office of Biostatistics, Empire State Plaza Tower Albany, NY 12237
1 Send reprint requests to Michael S. Zdeb at this address.
Data from birth certificates were used to examine the changing trends in the use of cesarean section from 1968 through 1978 in upstate New York. Differences in the percentages of primary cesarean section among population subgroups are cited. Hospital-to-hospital variation in the use of primary cesarean section is shown, as is the relationship among per cent primary cesarean section, hospital size, neonatal mortality, and the per cent of breech deliveries. The percentage of births delivered via cesarean section in 1978 is four times the percentage of 1968 (from 2.510.2% for whites, from 3.111.5% for nonwhites). Among subgroups of the population, the increase has ranged from one and one-half to five times the 1968 percentage. There was little hospital-to-hospital variation in the percentage of primary cesarean section in 19681969; however, in 19771978 the per cent of deliveries performed by primary cesarean section varied from 122%. While neonatal mortality was found to be related to the percentage of cesarean section performed in hospitals in 19681969, no such association was found in 19771978. An inverse relationship was found between the percentage of breech deliveries and the percentage of cesarean sections performed in hospitals in 19771978.
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