Levonorgestrel leads to lower observed number of pregnancies (all women) compared with yuzpe (high certainty).
Single‐dose levonorgestrel showed no clear difference in observed number of pregnancies (all women) compared with split‐dose levonorgestrel (moderate certainty).
Low‐dose mifepristone (< 25 mg) leads to lower observed number of pregnancies (all women) compared with levonorgestrel 1.5 mg (high certainty).
Ulipristal acetate (all doses) leads to lower observed number of pregnancies (all women) compared with levonorgestrel (high certainty).
Mid‐dose mifepristone (25 mg‐50 mg) probably leads to lower observed number of pregnancies (all women) compared with levonorgestrel 1.5 mg (moderate certainty).