Comparison 3. Crystalloid: high vs low preload volume.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
3.1 Women with hypotension requiring intervention	3	192	Risk Ratio (M‐H, Random, 95% CI)	0.55 [0.29, 1.02]
3.1.1 15 mL/kg crystalloid	2	67	Risk Ratio (M‐H, Random, 95% CI)	0.56 [0.33, 0.96]
3.1.2 20 mL/kg crystalloid	2	125	Risk Ratio (M‐H, Random, 95% CI)	0.51 [0.11, 2.44]
3.2 Nausea and/or vomiting	1	80	Risk Ratio (M‐H, Random, 95% CI)	1.20 [0.40, 3.62]
3.3 Apgar < 8 at 5 min	1		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
3.3.1 15 mL/kg crystalloid	1	45	Risk Ratio (M‐H, Random, 95% CI)	Not estimable
3.3.2 20 mL/kg crystalloid	1	45	Risk Ratio (M‐H, Random, 95% CI)	Not estimable