Cochrane · systematic review · CD010564

Metformin for women who are overweight or obese during pregnancy for improving maternal and infant outcomes

Dodd, JM, Grivell, RM, Deussen, AR, et al. · Cochrane Database of Systematic Reviews · 2018 · Cochrane Library

Pregnancy and ChildbirthAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
7
current version
GRADE rated
7
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 3 · 42.9%Moderate 1 · 14.3%High 3 · 42.9%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Metformin compared to placebo for women with obesity during pregnancy

Population: women with obesity during pregnancy
7 questions
OutcomeEffectEvidenceStatus / GRADE
Large‐for‐gestational‐age infant, defined as birthweight ≥ 90th percentile for gestational age and infant sex
Metformin vs placebo
RR 0.95 [0.7, 1.3]2 studies · 831 participantsHigh
Gestational weight gain (kg)
Metformin vs placebo
no estimate extracted3 studies · 899 participantsLow
Downgraded: risk of bias, imprecision, inconsistency
Gestational hypertension
Metformin vs placebo
RR 1.02 [0.54, 1.94]3 studies · 1040 participantsLow
Downgraded: risk of bias, imprecision, inconsistency
Pre‐eclampsia
Metformin vs placebo
RR 0.74 [0.09, 6.28]2 studies · 840 participantsLow
Downgraded: imprecision, inconsistency
Gestational diabetes (as defined by the trial authors)
Metformin vs placebo
RR 0.85 [0.61, 1.19]3 studies · 892 participantsModerate
Downgraded: risk of bias, imprecision
Adverse effects associated with the treatment: diarrhoea
Metformin vs placebo
RR 2.34 [1.74, 3.14]2 studies · 797 participantsHigh
Birthweight (g)
Metformin vs placebo
no estimate extracted2 studies · 834 participantsHigh