Comparison 2. Cephalosporins versus penicillins ‐ by type of caesarean.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Maternal sepsis	4	653	Risk Ratio (M‐H, Fixed, 95% CI)	2.91 [0.47, 18.10]
1.1 Elective CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 Non‐elective CS	1	75	Risk Ratio (M‐H, Fixed, 95% CI)	2.37 [0.10, 56.41]
1.3 Both elective and non‐elective, or undefined CS	3	578	Risk Ratio (M‐H, Fixed, 95% CI)	3.21 [0.34, 30.45]
2 Maternal endometritis	20	5390	Risk Ratio (M‐H, Random, 95% CI)	1.11 [0.90, 1.37]
2.1 Elective CS	3	461	Risk Ratio (M‐H, Random, 95% CI)	2.06 [0.66, 6.39]
2.2 Non‐elective CS	6	2362	Risk Ratio (M‐H, Random, 95% CI)	1.33 [1.01, 1.75]
2.3 Both elective and non‐elective, or undefined CS	11	2567	Risk Ratio (M‐H, Random, 95% CI)	0.85 [0.60, 1.19]
3 Infant sepsis	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3.1 Elective CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3.2 Non‐elective CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3.3 Both elective and non‐elective, or undefined CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4 Infant oral thrush	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4.1 Elective CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4.2 Non‐elective CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4.3 Both elective and non‐elective, or undefined CS	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]