Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Prevention of pressure ulcers
Systematic review	52 people Data from 1 RCT	Mean time to skin breakdown 10 days with vinyl boot 13 days with pillow	P <0.036	Effect size not calculated	pillow
Systematic review	52 people Data from 1 RCT	Development of heel ulcers 6 ulcers with vinyl boot 2 ulcers with pillow	Reported as not significant P value not reported		Not significant