Evidence Hub

Gestational weight gain according to treatment in gestational diabetes: a systematic review and meta-analysis

Amaral-Moreira CFA, Paulino DSM, Guida JPS, Pereira BG, Rehder PM, Surita FG

Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia, 2025

1 citation

Abstract

Objective: In this systematic review, we aim to compare the GWG in pregnant women with diabetes treated with metformin and other interventions.

Methods: Data Sources: The searched baselines included PubMed, Scopus, Web of Science, Embase, and Virtual Health Library (BVS). Study selection: We selected articles that compared the GWG in women with diabetes treated with metformin or insulin. We have included clinical trials (randomized or not), observational studies (cohort, case control, and cross-sectional). Reviews (systematic or not), posters, event abstracts, and letters were excluded. Data Collection: We pooled odds ratios (OR) and mean difference (MD) and used a random effect model using R Studio software to compare the weight gain, fetal birthweight and preeclampsia according to treatment.

Results: On research conducted in January 2024, with no data limit of the search, 433 trials were identified, of which 175 remained after duplicate removal. 50 studies were analyzed in the full text analyses and 9 were selected for the systematic review. 8 studies demonstrated that gestational weight gain during metformin treatment is lower when compared to other treatments, especially insulin, although it was not different from other outcomes. Meta-analyses demonstrated that oral medication GWG is lower than insulin with a standard mean difference (SMD) -1,05 [-1,87, - 0,23].

Conclusion: Oral medication has a lower gestational weight gain in patients with gestational diabetes when…

How strong is the evidence?

Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

Read the paper

Related studies

Go deeper in Evidence Hub

Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.

Open this study Sign up free