Barrois 1993.

Methods	Multicentre parallel RCT (countries not reported) Duration: 56 days Unit of randomisation: participant Unit of analysis: participant
Participants	Inclusion criteria: people presenting with open necrotic pressure ulcers Participants: 76 people with ulcers; Ulcer size (cm²): 15 (reported comparable between groups) Age, gender, ulcer location, ulcer stage not reported ("open necrotic pressure sore" interpreted by review authors as stage II or higher).
Interventions	Intervention arm 1: gauze (Tulle) with povidone iodine Intervention arm 2: hydrocolloid dressing (Granuflex) Co‐interventions: cleansing with saline and debridement with forceps if necessary in both groups.
Outcomes	Primary outcome: proportion of wounds completely healed Primary outcome: adverse events Secondary outcome: resource use (dressings per week)
Notes	Reported in abstract only; authors not contacted due to date of publication Funding: NR
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Reported in abstract only
Allocation concealment (selection bias)	Unclear risk	Reported in abstract only
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Reported in abstract only
Incomplete outcome data (attrition bias) All outcomes	Low risk	Quote: "Thirty‐eight patients received Granuflex and 38 received a Tulle dressing impregnated with povidone‐iodine antiseptic ointment......Two patients receiving Granuflex and five patients receiving the control dressing dropped out of the trial due to a deterioration in the pressure sore" Comment: 7 of 72 patients were not included in the analyses; reasons specified.
Selective reporting (reporting bias)	Unclear risk	Reported in abstract only
Other bias	Unclear risk	Reported in abstract only