Bunney 1976c.

Study characteristics
Methods	This study was carried out in a secondary care setting. This study was blinded. Intention‐to‐treat analysis was not carried out. This study was conducted in the UK.
Participants	156 participants were recruited: 18 dropped out. Inclusion criteria of the trial Adults and children Ordinary or refractory warts not specified Warts on the feet (simple plantar)
Interventions	SA/LA SA/LA + polyethylene Therapy continued for up to 12 weeks.
Outcomes	Outcomes of the trial Cure at 12 weeks
Notes	‐
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	This was done using a random (numbers) table.
Allocation concealment (selection bias)	Unclear risk	This was unclear.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Blinding was not specified, but it was likely that the study was not blinded.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Blinding was not specified, but it was likely that the study was not blinded.
Incomplete outcome data (attrition bias) All outcomes	High risk	Quote (page 674): "Twelve patients were rejected because they failed to attend or to carry out treatment regularly. Only one patient in each treatment group was rejected on account of persistent pain or failure to improve. Six defaulters could not be traced."
Selective reporting (reporting bias)	Low risk	All outcomes were reported.