Trends in low-risk cesarean delivery in the United States, 1990-2013.

This report describes trends in low-risk cesarean delivery rates in the United States from 1990 through 2013. Trends in low-risk cesarean delivery by state of residence, gestational age, age of mother, and race and Hispanic origin of mother are examined.Low-risk cesarean delivery is defined as a cesarean delivery among term (37 or more completed weeks), singleton, vertex (head first) births to women giving birth for the first time. Data for...