Pre‐pregnancy BMI, rate of gestational weight gain, and preterm birth among US Pacific Islander individuals
Authors' conclusion
The association between rate of GWG below or above the guidelines and PTB differs by pre-pregnancy BMI among Pacific Islander individuals.
Study context
- Population
- US Pacific Islander mothers with singleton infants (22–41 gestational weeks) without congenital anomalies, National Center for Health Statistics data (2014–2018)
- Participants
- 55,975 mothers
- Exposure
- Rate of gestational weight gain (GWG) below or above guidelines vs within guidelines, by pre-pregnancy BMI
- Outcome
- Preterm birth (PTB)
Methodological detailspopulation-based, Cox proportional hazards models
- Population-based
- Cox proportional hazards models
Main finding
As reported in the abstract
PTB by rate of GWG, stratified by pre-pregnancy BMI
Each group vs within guidelinesAdjusted hazard ratio (95% CI)
Below guidelinespre-pregnancy underweight
1.84(1.10–3.06)
Below guidelinespre-pregnancy healthy weight
1.38(1.15–1.65)
Below guidelinespre-pregnancy obesity class I
1.22(0.97–1.52)
Below guidelinespre-pregnancy obesity class II
1.43(1.05–1.96)
Above guidelinespre-pregnancy underweight
1.57(0.92–2.69)
Above guidelinespre-pregnancy obesity class II
1.31(0.98–1.76)
Observational data: associations, not effects.
Original publication
Pre‐pregnancy BMI, rate of gestational weight gain, and preterm birth among US Pacific Islander individuals. Obesity (Silver Spring). Published 2 February 2024. doi:10.
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