Comparison 1. VAS/mFBP versus mFBP.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Perinatal mortality and severe morbidity	1	28	Risk Ratio (M-H, Fixed, 95% CI)	0.43 [0.04, 4.25]
2 Caesarean section	1	28	Risk Ratio (M-H, Fixed, 95% CI)	0.87 [0.27, 2.79]
3 Perinatal mortality	1	28	Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4 Components of severe perinatal morbidity	1		Risk Ratio (M-H, Fixed, 95% CI)	Totals not selected
4.1 NICU admission > 24 hours	1		Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4.2 Organ failure	1		Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4.3 Encephalopathy	1		Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
5 Labour induction	1	28	Risk Ratio (M-H, Fixed, 95% CI)	0.69 [0.23, 2.05]
6 Maternal death or severe maternal morbidity	1	28	Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
7 Components of severe maternal morbidity	1		Risk Ratio (M-H, Fixed, 95% CI)	Totals not selected
7.1 ICU admission > 24 hours	1		Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
7.2 Organ failure	1		Risk Ratio (M-H, Fixed, 95% CI)	0.0 [0.0, 0.0]
8 Maternal hospital admission > 7 days	1	28	Risk Ratio (M-H, Fixed, 95% CI)	0.87 [0.06, 12.52]