Comparison 9. Basic wound contact dressings compared with silver dressings.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Proportion of wounds with SSI	7		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
1.1 Clean	2	496	Risk Ratio (M‐H, Random, 95% CI)	1.11 [0.47, 2.62]
1.2 Potentially contaminated surgery	5	1353	Risk Ratio (M‐H, Random, 95% CI)	0.83 [0.51, 1.37]