Metformin probably leads to higher adverse events (gastrointestinal) per woman compared with placebo or no treatment (moderate certainty).
Metformin probably leads to higher clinical pregnancy rate per woman compared with placebo or no treatment (moderate certainty).
Metformin may leads to higher ovulation rate per woman compared with placebo or no treatment (low certainty).
Metformin showed no clear difference in miscarriage rate per woman compared with placebo or no treatment (low certainty).
Metformin combined with clomiphene citrate showed no clear difference in live birth rate per woman compared with clomiphene citrate alone (low certainty).
Metformin combined with clomiphene citrate probably leads to higher adverse events (gastrointestinal) per woman compared with clomiphene citrate alone (moderate certainty).
Metformin combined with clomiphene citrate probably leads to higher clinical pregnancy rate per woman compared with clomiphene citrate alone (moderate certainty).
Metformin combined with clomiphene citrate may leads to higher ovulation rate per woman compared with clomiphene citrate alone (low certainty).
Coasting may leads to lower OHSS compared with no coasting (low certainty).
The review found no eligible studies for this question.
The review found no eligible studies for this question.
Coasting showed no clear difference in clinical Pregnancy compared with gonadotrophin‐releasing hormone antagonist (low certainty).
It is very uncertain whether coasting changes multiple pregnancy compared with gonadotrophin‐releasing hormone antagonist (very low certainty).
The review found no eligible studies for this question.
It is very uncertain whether coasting changes OHSS compared with follicle stimulating hormone administration at time of hCG (very low certainty).
The review found no eligible studies for this question.
Coasting showed no clear difference in clinical Pregnancy compared with follicle stimulating hormone administration at time of hCG (low certainty).
The review found no eligible studies for this question.
It is very uncertain whether coasting changes live birth compared with no coasting (very low certainty).