The gestational age-specific difference in birthweight between singletons born after fresh and frozen embryo transfer: A cohort study.

ABSTRACT:

Introduction

Accumulating studies have suggested singletons born after frozen embryo transfer (FET) were higher than those born after fresh embryo transfer (Fre-ET). However, fewer studies had investigated the gestational age-specific between-group difference in birthweight. This study aimed to investigate the gestational week-specific difference in singleton birthweight after FET vs Fre-ET and explore potential factors that impact the difference.

Material and methods

In this retrospective cohort study, a total of 25 863 singletons were included. Multivariable linear regression and logistic regression were used to evaluate the between-group differences in mean birthweight and the incidences of large for gestational age (LGA) and small for gestational age (SGA), respectively.

SUBMITTER: Ding Q 

PROVIDER: S-EPMC9951305 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature