Comparison 1. Electrical stimulation (plus standard care) versus sham/no electrical stimulation (plus standard care).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Proportion of pressure ulcers healed	11	512	Risk Ratio (IV, Random, 95% CI)	1.99 [1.39, 2.85]
2 Composite measure of pressure ulcer severity	1		Mean Difference (IV, Fixed, 95% CI)	Subtotals only
3 Surface area of pressure ulcers	12		Mean Difference (IV, Random, 95% CI)	Totals not selected
4 Time to complete healing	2	55	Hazard Ratio (Fixed, 95% CI)	1.06 [0.47, 2.41]
5 Rate of pressure ulcer healing	12	613	Mean Difference (IV, Fixed, 95% CI)	4.59 [3.49, 5.69]