It is very uncertain whether screening hysteroscopy changes clinical pregnancy compared with no hysteroscopy (very low certainty).
It is very uncertain whether screening hysteroscopy changes miscarriage compared with no hysteroscopy (very low certainty).
Screening hysteroscopy may leads to higher live birth compared with no hysteroscopy (low certainty).
It is very uncertain whether screening hysteroscopy changes adverse events compared with no hysteroscopy (very low certainty).
Screening hysteroscopy may leads to higher clinical pregnancy compared with no hysteroscopy (low certainty).
Screening hysteroscopy showed no clear difference in miscarriage compared with no hysteroscopy (low certainty).
It is very uncertain whether hysterectomy with opportunistic salpingectomy changes surgery‐related adverse events: intraoperative complications compared with hysterectomy without opportunistic salpingectomy (very low certainty).
It is very uncertain whether hysterectomy with opportunistic salpingectomy changes surgery‐related adverse events: short‐term postoperative complications compared with hysterectomy without opportunistic salpingectomy (very low certainty).
It is very uncertain whether long‐term GnRH agonist therapy changes live birth rate compared with no additional therapy (very low certainty).
It is very uncertain whether long‐term GnRH agonist therapy changes complication rate compared with no additional therapy (very low certainty).
It is very uncertain whether long‐term GnRH agonist therapy changes clinical pregnancy rate compared with no additional therapy (very low certainty).
It is very uncertain whether long‐term GnRH agonist therapy changes multiple pregnancy rate compared with no additional therapy (very low certainty).
It is very uncertain whether long‐term GnRH agonist therapy changes miscarriage rate compared with no additional therapy (very low certainty).
Metformin showed no clear difference in live birth rate per woman compared with placebo or no treatment (low certainty).
Metformin combined with clomiphene citrate showed no clear difference in miscarriage rate per woman compared with clomiphene citrate alone (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).