Risks of preterm birth among non-Hispanic black and non-Hispanic white women: Effect modification by maternal age.

ABSTRACT:

Background

Preterm birth (PTB) disproportionately affects African American compared with Caucasian women, although reasons for this disparity remain unclear. Some suggest that a differential effect of maternal age by race/ethnicity, especially at older maternal ages, may explain disparities.

Objective

To determine whether the relationship between maternal age and preterm birth varies by race/ethnicity among primiparae non-Hispanic blacks (NHB) and non-Hispanic whites (NHW).

Methods

A cross-sectional study of 367 081 singleton liveborn first births to NHB and NHW women in California from 2008 to 2012 was conducted. Rate ratios (RR) were estimated for PTB and its subtypes-spontaneous and clinician-initiated-after adjusting for confounders through Poisson regression. Uni

SUBMITTER: Keiser AM 

PROVIDER: S-EPMC6993282 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature