Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Time to healing
[11] Systematic review	51 people with small blistered burns Data from 1 RCT	Mean healing time 10.0 days with polyurethane film 14.1 days with chlorhexidine-impregnated paraffin gauze dressing	P <0.02 RCT[32] gave no information on methods for randomisation or allocation concealment Participants and investigators not blinded	Effect size not calculated	polyurethane film
Healing
[11] Systematic review	51 people with small blistered burns Data from 1 RCT	Healing at 10 days after injury with polyurethane film with chlorhexidine-impregnated paraffin gauze dressing Absolute results reported graphically	P <0.05 RCT[32] gave no information on methods for randomisation or allocation concealment Participants and investigators not blinded	Effect size not calculated	polyurethane film
[11] Systematic review	51 people with small blistered burns Data from 1 RCT	Healing at more than 10 days after injury with polyurethane film with chlorhexidine-impregnated paraffin gauze dressing Absolute results reported graphically	Reported as not significant P value not reported RCT[32] gave no information on methods for randomisation or allocation concealment Participants and investigators not blinded		Not significant
Wound infection
[11] Systematic review	51 people with small blistered burns Data from 1 RCT	Proportion of people with wound infection 1/26 (4%) with polyurethane film 2/25 (8%) with chlorhexidine-impregnated paraffin gauze dressing	RR 0.48 95% CI 0.05 to 4.98 P = 0.54 RCT[32] gave no information on methods for randomisation or allocation concealment Participants and investigators not blinded		Not significant