Sharquie 2007.

Study characteristics
Methods	This study was carried out in a secondary care setting. This study was blinded. It was unclear if ITT analysis was carried out This study was conducted in Iraq.
Participants	90 participants were recruited: 23 dropped out. Inclusion criteria of the trial Adults and children Ordinary warts The site was not specified
Interventions	5% zinc sulphate or 10% zinc sulphate versus Distilled water These were applied 3 times daily for 4 weeks.
Outcomes	Outcomes of the trial Cure at 2 weeks, 4 weeks, and 6 months
Notes	‐
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Randomisation was computerised (additional information came from the trial investigator).
Allocation concealment (selection bias)	Unclear risk	Allocation concealment was unclear.
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Quote ('Methods', page 1418): "...double blinded study." Containers were labelled by a third person and the contents were unknown by the treating doctor or participant until the end of the study. (page 1419).
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Quote ('Methods', page 1418): "...double blinded study." No further details were given about the blinding of outcome assessors.
Incomplete outcome data (attrition bias) All outcomes	High risk	23/90 participants dropped out (did not complete therapy). It was unclear which intervention group(s) the dropouts belonged to.
Selective reporting (reporting bias)	Low risk	All outcomes were reported.