Comparison 4. (1.10) Mifepristone versus placebo: all primiparae.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
3 Caesarean section	3	254	Risk Ratio (M‐H, Fixed, 95% CI)	0.71 [0.47, 1.06]
4 Labour/cervical ripening within 48 hours	2	174	Risk Ratio (M‐H, Fixed, 95% CI)	3.38 [1.66, 6.87]
5 Labour/cervical ripening within 72 hours	1	80	Risk Ratio (M‐H, Fixed, 95% CI)	1.87 [1.03, 3.40]
7 Neonatal hypoglycaemia	1	80	Risk Ratio (M‐H, Fixed, 95% CI)	1.26 [0.69, 2.30]
9 Oxytocin augmentation	1	80	Risk Ratio (M‐H, Fixed, 95% CI)	0.86 [0.51, 1.43]
11 Instrumental vaginal delivery	1	80	Risk Ratio (M‐H, Fixed, 95% CI)	1.4 [0.60, 3.25]
14 Neonatal intensive care unit admission	1	80	Risk Ratio (M‐H, Fixed, 95% CI)	0.20 [0.01, 4.82]
23 Uterine hyperstimulation	1	80	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
26 Caesarean section for CTG abnormalities	1	55	Risk Ratio (M‐H, Fixed, 95% CI)	3.2 [0.95, 10.80]
27 Caesarean section for arrested labour	1	55	Risk Ratio (M‐H, Fixed, 95% CI)	0.24 [0.03, 1.92]