The review found no eligible studies for this question.
It is very uncertain whether metformin changes clinical pregnancy rate per woman ‐ short protocol GnRH‐antagonist compared with placebo or no treatment (very low certainty).
Metformin showed no clear difference in miscarriage rate per woman compared with placebo or no treatment (low certainty).
It is very uncertain whether metformin changes live birth rate per woman aParticipants with BMI < 30 kg/m2 or ≤ 32… compared with clomiphene citrate (very low certainty).
It is very uncertain whether metformin changes live birth rate per woman aParticipants with BMI ≥ 30 kg/m2 compared with clomiphene citrate (very low certainty).
The review found no eligible studies for this question.
Metformin may leads to higher clinical pregnancy rate per womanaParticipants with BMI < 30 kg/m2… compared with clomiphene citrate (low certainty).
Metformin may leads to lower clinical pregnancy rate per woman aParticipants with BMI ≥ 30 kg/m2 compared with clomiphene citrate (low certainty).
Metformin showed no clear difference in ovulation rate per woman fParticipants with BMI < 30 kg/m2 compared with clomiphene citrate (low certainty).
Metformin may leads to lower ovulation rate per woman fParticipants with BMI ≥ 30 kg/m2 compared with clomiphene citrate (low certainty).
Metformin showed no clear difference in serious adverse events ( compared with active control (moderate certainty).
Metformin showed no clear difference in withdrew due to intolerance ( compared with active control (moderate certainty).
The review found no eligible studies for this question.
It is very uncertain whether metformin changes all‐cause death ( compared with placebo (very low certainty).
Metformin showed no clear difference in serious adverse events ( compared with placebo (moderate certainty).
Metformin probably leads to higher withdrew due to intolerance ( compared with placebo (moderate certainty).