Association of maternal pre-pregnancy low or increased body mass index with adverse pregnancy outcomes.

ABSTRACT: This study investigated the association between pre-pregnancy body mass index (BMI) and adverse pregnancy outcomes among women participated in the National Free Preconception Health Examination Project in Guangdong Province, China, and explored these associations according to maternal age. Pre-pregnancy BMI was classified into underweight (BMI < 18.5 kg/m²), healthy weight (18.5-23.9 kg/m²), overweight (24.0-27.9 kg/m²), and obesity (≥ 28.0 kg/m²) according to Chinese criteria. Outcomes were preterm birth (PTB, delivery before 37 weeks of gestation), large for gestational age (LGA, birthweight above the 90th percentile for gestational age by infants' sex), small for gestational age (SGA, birthweight below the 10th percentile for gestational age b

SUBMITTER: Tang J 

PROVIDER: S-EPMC7884680 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature