Comparison 8. Antispasmodics versus control: sensitivity analysis: studies with high risk of bias excluded.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Duration of first stage of labour (min)	3	334	Mean Difference (IV, Fixed, 95% CI)	‐47.78 [‐68.66, ‐26.91]
2 Duration of second stage of labour (min)	3	336	Mean Difference (IV, Random, 95% CI)	2.64 [‐6.34, 11.61]
3 Duration of third stage of labour (min)	1	129	Mean Difference (IV, Fixed, 95% CI)	2.0 [‐0.98, 4.98]
4 Total duration of labour (min)	3	304	Mean Difference (IV, Random, 95% CI)	‐44.79 [‐80.19, ‐9.39]
5 Rate of cervical dilatation (cm/h)	2	190	Mean Difference (IV, Random, 95% CI)	0.22 [‐0.39, 0.83]
6 Rate of normal vertex deliveries	4	425	Risk Ratio (M‐H, Fixed, 95% CI)	1.03 [0.96, 1.10]