Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Prevention of pressure ulcers
RCT	130 people In review	Incidence of pressure ulcers 8 weeks 2/61 (3%) with hydrocellular heel supports 22/50 (44%) with orthopaedic wool padding	RR 0.07 95% CI 0.02 to 0.30 These results should be interpreted with caution because of the lack of intention-to-treat analysis	Large effect size	hydrocellular heel supports