Interpregnancy interval and adverse birth outcomes: a population-based cohort study of twins.

ABSTRACT:

Background

To investigate associations between interpregnancy intervals (IPIs) and adverse birth outcomes in twin pregnancies.

Methods

This retrospective cohort study of 9,867 twin pregnancies in Western Australia from 1980-2015. Relative Risks (RRs) were estimated for the interval prior to the pregnancy (IPI) as the exposure and after the pregnancy as a negative control exposure for preterm birth (< 37 weeks), early preterm birth (< 34 weeks), small for gestational age (SGA: < 10^th percentile of birth weight by sex and gestational age) and low birth weight (LBW: birthweight < 2,500 g).

Results

Relative to IPIs of 18-23 months, IPIs of < 6 months were associated with a higher risk of early preterm birth (aRR 1.41, 95% CI 1.08-1.83) and LBW for at least one

SUBMITTER: Dhamrait G 

PROVIDER: S-EPMC10832241 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature