IVF showed no clear difference in clinical pregnancy rate per woman randomised compared with IUI + ovarian stimulation with gonadotropins or CC (low certainty).
It is very uncertain whether IVF changes clinical pregnancy rate per woman randomised compared with expectant management (very low certainty).
It is very uncertain whether IVF changes clinical pregnancy rate per woman randomised compared with unstimulated IUI (very low certainty).
Natural cycle IVF showed no clear difference in clinical pregnancy per woman compared with standard IVF (low certainty).
It is very uncertain whether day 3 changes clinical pregnancy rate per woman compared with day 2 embryo transfer following IVF or ICSI (very low certainty).
Monitoring ovarian stimulation by transvaginal ultrasound (TVUS) only showed no clear difference in clinical pregnancy per woman compared with monitoring with TVUS plus serum estradiol (low certainty).
Clomiphene citrate or letrozole with or without gonadotropins (with… showed no clear difference in clinical pregnancy rate per woman compared with gonadotropins (with GnRH agonist or midcycle antagonist) (low certainty).
RhCG showed no clear difference in clinical pregnancy rate per woman compared with uhCG (moderate certainty).
It is very uncertain whether rhLH changes clinical pregnancy rate per woman compared with uhCG (very low certainty).
Glucocorticoid supplementation showed no clear difference in clinical pregnancy rate per woman/couple compared with placebo (low certainty).
Brief co‐incubation may leads to higher clinical pregnancy rate per randomized woman compared with standard insemination (low certainty).
Ultrasound‐guided embryo transfer probably leads to higher clinical pregnancy (per woman randomised) compared with clinical touch (moderate certainty).
Clomiphene citrate or letrozole with or without gonadotropins (with… showed no clear difference in clinical pregnancy rate per woman compared with gonadotropins (with GnRH agonists or midcycle antagonist) (moderate certainty).
It is very uncertain whether adjuvant growth hormone changes clinical pregnancy rate per woman randomised compared with no adjuvant: routine use (very low certainty).
Adjuvant growth hormone may leads to higher clinical pregnancy rate per woman randomised compared with no adjuvant: poor responders (low certainty).
Assisted hatching may leads to higher clinical pregnancy rate per woman randomised compared with no assisted hatching (low certainty).
Metformin may leads to higher clinical pregnancy rate per woman ‐ long protocol GnRH‐agonist compared with placebo or no treatment (low certainty).
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).
Endometrial injury showed no clear difference in clinical pregnancy per woman randomised: sensitivity analysis (no… compared with control (low certainty).
It is very uncertain whether higher changes clinical pregnancy per woman randomised: sensitivity analysis… compared with lower degree of injury (very low certainty).