Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
[21] RCT	63 people In review [8]	Adverse effects with electrotherapy with sham treatment Absolute results not reported	2 people in the electrotherapy group had hypergranulation of the ulcer; and 2 had local irritation (2/35 [6%] for either outcome), possibly as a result of concomitant use of topical sulfadiazine cream
[22] RCT	34 people	Adverse effects with electrotherapy plus standard care with standard care alone Absolute results not reported	The RCT noted that adverse effects were minor and rare, the most common with electrotherapy plus standard care was red, raised, itchy skin under the large dispersive electrode, which was attributed to contact dermatitis
[19] RCT	57 people with stage 2 and stage 3 pressure ulcers	Adverse effects with electrical stimulation plus standard care with standard care alone Absolute results not reported	The RCT noted that there were no adverse effects with electrical stimulation