It is very uncertain whether IVF changes live birth per woman randomised compared with expectant management (very low certainty).
IVF showed no clear difference in live birth rate per woman randomised compared with IUI + ovarian stimulation with gonadotropins or CC (low certainty).
IVF may leads to higher live birth rate per woman randomised compared with unstimulated IUI (low certainty).
Assisted hatching showed no clear difference in live births per woman randomised compared with no assisted hatching (low certainty).
It is very uncertain whether adjuvant growth hormone changes live birth rate per woman randomised compared with no adjuvant: routine use (very low certainty).
It is very uncertain whether adjuvant growth hormone changes live birth rate per woman randomised compared with no adjuvant: poor responders (very low certainty).
Ultrasound‐guided embryo transfer may leads to higher live birth and ongoing pregnancy (per woman randomised) compared with clinical touch (low certainty).
Endometrial injury showed no clear difference in live birth per woman randomised (studies at low risk of selection… compared with control (moderate certainty).
It is very uncertain whether higher changes live birth per woman randomised: sensitivity analysis (including all… compared with lower degree of injury (very low certainty).