Trimester-specific rate of gestational weight loss or gain and birth size: differences by prepregnancy BMI.

ABSTRACT:

Objective

The objective of this study was to estimate the effects of trimester-specific gestational weight gain (GWG) on small and large (compared with appropriate) for gestational age (i.e., SGA, LGA, and AGA) by prepregnancy BMI classifications.

Methods

We conducted a cohort study of pregnancies in a national network of community health care organizations, stratifying by prepregnancy BMI (n = 20,676 with normal weight; 19,156 with overweight; 11,647 with obesity class I; 5124 with obesity class II; and 3197 with obesity class III). SGA and LGA (vs. AGA) were modeled as a function of trimester 1, 2, or 3 GWG rate, previous trimester(s) GWG rate, and maternal characteristics using modified Poisson regression.

Results

GWG rates ranged from weight loss to substantial ga

SUBMITTER: Boone-Heinonen J 

PROVIDER: S-EPMC11357887 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature