Pre‐pregnancy BMI, rate of gestational weight gain, and preterm birth among US Pacific Islander individuals

Author:

Wu Bohao1ORCID,Shabanova Veronika23,Taylor Sarah2,Hawley Nicola L.1ORCID

Affiliation:

1. Department of Chronic Disease Epidemiology Yale University School of Public Health New Haven Connecticut USA

2. Department of Pediatrics Yale University School of Medicine New Haven Connecticut USA

3. Department of Biostatistics Yale University School of Medicine New Haven Connecticut USA

Abstract

AbstractObjectiveThe objective of this study was to examine the association between rate of gestational weight gain (GWG) and preterm birth (PTB) classified by pre‐pregnancy BMI among Pacific Islander individuals in the United States.MethodsPacific Islander mothers (n = 55,975) and singleton infants (22–41 gestational weeks) without congenital anomalies were included using data from the National Center for Health Statistics (2014–2018). PTB was compared by pre‐pregnancy BMI among women in each stratum of rate of GWG using Cox proportional hazards models.ResultsCompared with mothers with a rate of GWG within the guidelines, mothers with a rate of GWG below the guidelines and either pre‐pregnancy underweight (adjusted hazard ratio [aHR] = 1.84, 95% CI: 1.10–3.06), healthy weight (aHR = 1.38, 95% CI: 1.15–1.65), obesity class I (aHR = 1.22, 95% CI: 0.97–1.52), or obesity class II (aHR = 1.43, 95% CI: 1.05–1.96) had an increased risk of PTB; mothers with a rate of GWG above the guidelines and either pre‐pregnancy underweight (aHR = 1.57, 95% CI: 0.92–2.69) or obesity class II (aHR = 1.31, 95% CI: 0.98–1.76) had an increased risk of PTB.ConclusionsThe association between rate of GWG below or above the guidelines and PTB differs by pre‐pregnancy BMI among Pacific Islander individuals.

Funder

Eunice Kennedy Shriver National Institute of Child Health and Human Development

Publisher

Wiley

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