Progesterone may leads to higher clinical pregnancy rate compared with placebo/no treatment (low certainty).
Progesterone may leads to higher clinical pregnancy rate compared with placebo/no treatment (low certainty).
It is very uncertain whether subcutaneous (Sc) gonadotropin‐releasing hormone (GnRH) agonist changes clinical pregnancy rate compared with placebo/no treatment (very low certainty).
It is very uncertain whether pentoxifylline changes clinical pregnancy rate compared with placebo (very low certainty).
Dopamine agonist showed no clear difference in clinical pregnancy rate compared with placebo/no intervention (low certainty).
Gel agents showed no clear difference in clinical pregnancy rate compared with no gel agents (or placebo) (low certainty).
Steroids (any route) showed no clear difference in clinical pregnancy rate compared with no steroids (or placebo) (low certainty).
Hydroflotation agents showed no clear difference in clinical pregnancy rate compared with no hydroflotation agents (or placebo) (moderate certainty).
It is very uncertain whether among different GnRH agonists changes clinical pregnancy rate compared with placebo (very low certainty).
Antioestrogen may leads to higher clinical pregnancy rate compared with placebo (low certainty).
DHEA or testosterone probably leads to higher clinical pregnancy rate ‐ DHEA compared with placebo/no treatment (moderate 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).
Metformin probably leads to higher clinical pregnancy rate per woman compared with placebo or no treatment (moderate certainty).
Metformin may leads to higher clinical pregnancy rate (per woman) compared with placebo co‐treatment (low certainty).
DHEA or testosterone probably leads to higher clinical pregnancy rate ‐ Testosterone compared with placebo/no treatment (moderate certainty).
Progesterone showed no clear difference in miscarriage rate per clinical pregnancy compared with placebo/no treatment (low certainty).
Progesterone showed no clear difference in miscarriage rate per clinical pregnancy compared with placebo/no treatment (low certainty).
Progesterone showed no clear difference in miscarriage rate per clinical pregnancy compared with placebo/no treatment (low certainty).
Glucocorticoid supplementation showed no clear difference in clinical pregnancy rate per woman/couple compared with placebo (low certainty).
It is very uncertain whether G‐CSF changes clinical pregnancy rate per woman randomised compared with no treatment or placebo (very low certainty).