Comparison 3. Silicone dressing versus no dressing.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Any pressure ulcer	6	1247	Risk Ratio (M‐H, Fixed, 95% CI)	0.25 [0.16, 0.41]
2 Pressure ulcer (high‐quality studies)	1	77	Risk Ratio (M‐H, Random, 95% CI)	1.95 [0.18, 20.61]
3 Pressure ulcer stage	5		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
3.1 Stage 1	3	749	Risk Ratio (M‐H, Random, 95% CI)	0.27 [0.08, 0.90]
3.2 Stage 2	4	1090	Risk Ratio (M‐H, Random, 95% CI)	0.40 [0.17, 0.94]
3.3 Stage 4	1	322	Risk Ratio (M‐H, Random, 95% CI)	0.2 [0.01, 4.13]
3.4 Unstageable	1	366	Risk Ratio (M‐H, Random, 95% CI)	0.20 [0.01, 4.09]
3.5 Deep tissue injury	1	366	Risk Ratio (M‐H, Random, 95% CI)	0.99 [0.06, 15.69]