Comparison 2. Higher versus lower degree of injury.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 Live birth rate per woman randomised: sensitivity analysis (including all studies)	1	129	Odds Ratio (M‐H, Fixed, 95% CI)	1.28 [0.31, 5.37]
2.2 Miscarriage: sensitivity analysis (including all studies)	1	129	Odds Ratio (M‐H, Fixed, 95% CI)	1.28 [0.31, 5.37]
2.3 Clinical pregnancy per woman randomised: sensitivity analysis (including all studies)	1	129	Odds Ratio (M‐H, Fixed, 95% CI)	1.31 [0.46, 3.73]
2.4 Pain (visual analogue scale): sensitivity analysis (including all studies)	1	129	Mean Difference (IV, Fixed, 95% CI)	1.10 [0.29, 1.91]