Metformin showed no clear difference in multiple pregnancy rate (per woman) compared with placebo co‐treatment (low certainty).
Metformin may leads to higher ongoing pregnancy rate (per woman) compared with placebo co‐treatment (low certainty).
Metformin may leads to higher clinical pregnancy rate (per woman) compared with placebo co‐treatment (low certainty).
Mifepristone probably leads to lower prevalence of dysmenorrhoea compared with placebo (moderate certainty).
Mifepristone may leads to lower prevalence of dyspareunia compared with placebo (low certainty).
Any anti‐adhesion therapy A may leads to lower presence of intrauterine adhesions at second‐look hysteroscopy (6‐12… compared with anti‐adhesion therapy B following operative hysteroscopy (low certainty).
It is very uncertain whether IUI in stimulated cycles changes pregnancy rate per couple (all cycles) compared with TI (very low certainty).
It is very uncertain whether IUI in stimulated cycles changes pregnancy rate per couple (all cycles) compared with IUI (very low certainty).
It is very uncertain whether IVF changes pregnancy rate per couple (all cycles) compared with IUI (very low certainty).
It is very uncertain whether IUI in natural cycles changes pregnancy rate per couple (all cycles) compared with TI (very low certainty).
IUI in stimulated cycles showed no clear difference in multiple pregnancy rate per couple compared with TI (low certainty).
GnRH antagonist showed no clear difference in ongoing pregnancy rate per woman randomised compared with long‐course GnRH agonist (moderate certainty).
GnRH antagonist showed no clear difference in clinical pregnancy rate per woman randomised compared with long‐course GnRH agonist (moderate certainty).
It is very uncertain whether antioestrogen changes clomiphene citrate plus tamoxifen versus clomiphene citrate ‐… compared with antioestrogen (very low certainty).
Antioestrogen plus medical adjunct showed no clear difference in clomiphene citrate plus bromocriptine versus clomiphene citrate ‐… compared with antioestrogen alone (low certainty).
The intervention may leads to lower clinical pregnancy ‐ Clomiphene citrate 5 days versus clomiphene… (low certainty).
It is very uncertain whether the intervention changes multiple pregnancy ‐ Clomiphene citrate 5 days versus clomiphene… (very low certainty).
The intervention may leads to higher clinical pregnancy ‐ Early versus late clomiphene citrate (low certainty).
Antioestrogen may leads to higher clinical pregnancy rate compared with placebo (low certainty).
The review found no eligible studies for this question.