Comparison 4. Antiprotozoal versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Abdominal wound infection	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Abdominal hysterectomy	2	462	Risk Ratio (M‐H, Fixed, 95% CI)	0.71 [0.32, 1.57]
2 Urinary tract infection	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 Vaginal hysterectomy	2	226	Risk Ratio (M‐H, Fixed, 95% CI)	1.25 [0.51, 3.04]
2.2 Abdominal hysterectomy	1	146	Risk Ratio (M‐H, Fixed, 95% CI)	1.0 [0.34, 2.96]
3 Pelvic infection	6		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Vaginal hysterectomy	4	375	Risk Ratio (M‐H, Fixed, 95% CI)	0.36 [0.17, 0.75]
3.2 Abdominal hysterectomy	4	662	Risk Ratio (M‐H, Fixed, 95% CI)	0.42 [0.22, 0.83]
4 Other serious infections	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
4.1 Vaginal hysterectomy	2	246	Risk Ratio (M‐H, Fixed, 95% CI)	0.25 [0.03, 2.21]
4.2 Abdominal hysterectomy	1	146	Risk Ratio (M‐H, Fixed, 95% CI)	1.0 [0.14, 6.91]
5 Postoperative fever	3		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
5.1 Vaginal hysterectomy	2	130	Risk Ratio (M‐H, Fixed, 95% CI)	0.45 [0.21, 0.97]
5.2 Abdominal hysterectomy	1	100	Risk Ratio (M‐H, Fixed, 95% CI)	0.39 [0.18, 0.85]
6 Total adverse effects	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
6.1 Abdominal hysterectomy	1	146	Risk Ratio (M‐H, Fixed, 95% CI)	2.0 [0.63, 6.35]
7 Need for therapeutic antibiotics	3		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
7.1 Vaginal hysterectomy	2	196	Risk Ratio (M‐H, Random, 95% CI)	0.55 [0.15, 1.95]
7.2 Abdominal hysterectomy	2	246	Risk Ratio (M‐H, Random, 95% CI)	0.55 [0.15, 2.02]
8 Length of hospital stay	5		Mean Difference (IV, Fixed, 95% CI)	Subtotals only
8.1 Vaginal hysterectomy	3	276	Mean Difference (IV, Fixed, 95% CI)	‐0.86 [‐1.22, ‐0.49]
8.2 Abdominal hysterectomy	3	358	Mean Difference (IV, Fixed, 95% CI)	‐1.33 [‐1.68, ‐0.97]