Comparison 3. Subgroup analysis, type of cycle.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
3.1 live birth/ongoing pregnancy	3	340	Odds Ratio (M‐H, Fixed, 95% CI)	1.11 [0.73, 1.70]
3.1.1 fresh cycle	2	280	Odds Ratio (M‐H, Fixed, 95% CI)	1.44 [0.90, 2.30]
3.1.2 frozen cycle	1	60	Odds Ratio (M‐H, Fixed, 95% CI)	0.30 [0.10, 0.92]
3.2 Miscarriage	4	430	Odds Ratio (M‐H, Fixed, 95% CI)	0.89 [0.44, 1.78]
3.2.1 fresh cycle	3	370	Odds Ratio (M‐H, Fixed, 95% CI)	0.57 [0.25, 1.27]
3.2.2 frozen cycle	1	60	Odds Ratio (M‐H, Fixed, 95% CI)	7.25 [0.82, 64.46]
3.3 clinical pregnancy	5	526	Odds Ratio (M‐H, Fixed, 95% CI)	1.13 [0.80, 1.61]
3.3.1 fresh cycle	3	370	Odds Ratio (M‐H, Fixed, 95% CI)	1.17 [0.77, 1.78]
3.3.2 frozen cycle	2	156	Odds Ratio (M‐H, Fixed, 95% CI)	1.05 [0.56, 1.98]
3.4 multiple pregnancy	2	150	Odds Ratio (M‐H, Fixed, 95% CI)	0.70 [0.26, 1.83]
3.4.1 fresh cycle	1	90	Odds Ratio (M‐H, Fixed, 95% CI)	1.75 [0.39, 7.81]
3.4.2 frozen cycle	1	60	Odds Ratio (M‐H, Fixed, 95% CI)	0.31 [0.07, 1.29]