Small-for-gestational-age births in the United States: an age-period-cohort analysis.

  title={Small-for-gestational-age births in the United States: an age-period-cohort analysis.},
  author={Cande V Ananth and Bijal A. Balasubramanian and Kitaw Demissie and Wendy L. Kinzler},
  volume={15 1},
BACKGROUND During the last 2 decades, the rate of low birthweight has increased, as has the rate of preterm delivery, among both whites and blacks. Examination of causes for these secular trends has focused largely on changes in the distributions of maternal age and, less commonly, on birth cohort. Little is known as to how age, period, and birth cohort interact on trends in small births at term. METHODS The U.S. natality files were used to assess trends in term (>/=37 weeks gestation) small… CONTINUE READING