Comparison 9. Poor activity against penicillin‐resistant anaerobic bacteria versus good activity.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Treatment failure	7	774	Risk Ratio (M‐H, Fixed, 95% CI)	1.94 [1.38, 2.72]
2 Severe complication	5	671	Risk Ratio (M‐H, Fixed, 95% CI)	1.68 [0.45, 6.29]
3 Wound infection	6	740	Risk Ratio (M‐H, Fixed, 95% CI)	1.88 [1.17, 3.02]
4 Allergic reaction	5	628	Risk Ratio (M‐H, Fixed, 95% CI)	1.34 [0.34, 5.36]
5 Diarrhea	6	743	Risk Ratio (M‐H, Fixed, 95% CI)	0.29 [0.08, 1.04]
6 Length of stay	2	267	Mean Difference (IV, Fixed, 95% CI)	0.37 [‐0.00, 0.73]