Primary and Repeat Cesarean Deliveries: A Population-based Study in the United States, 1979-2010.

ABSTRACT:

Background

Despite the temporal increase in cesarean deliveries, the extent to which maternal age, period, and maternal birth cohorts may have contributed to these trends remains unknown.

Methods

We performed an analysis of 123 million singleton deliveries in the United States (1979-2010). We estimated rate ratio (RR) with 95% confidence interval (CI) for primary and repeat cesarean deliveries. We examined changes in cesarean rates with weighted Poisson regression models across three time-scales: maternal age, year of delivery, and birth cohort (mother's birth year).

Results

The primary cesarean rate increased by 68% (95% confidence interval [CI]: 67%, 69%) between 1979 (11.0%) and 2010 (18.5%). Repeat cesarean deliveries increased by 178% (95% CI: 176, 179) from 5.2%

SUBMITTER: Ananth CV 

PROVIDER: S-EPMC5501955 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature