Yazar 1994.

Study characteristics
Methods	This study was carried out in a secondary care setting. The blinding within this study was unclear. It was unclear if ITT analysis was carried out This study was conducted in Turkey.
Participants	70 participants were recruited: None dropped out. Inclusion criteria of the trial Adults and children Ordinary warts The site was not specified
Interventions	Silver nitrate Placebo (black ink) Treatment was applied by a physician 3 times at intervals of 3 days.
Outcomes	Outcomes of the trial Cure at 1 month
Notes	‐
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	This was described as randomised; no details were given.
Allocation concealment (selection bias)	Unclear risk	This was unclear.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	An attempt was made to disguise the appearance of the placebo solution. Quote (page 330): "The patients were warned that the colour of their warts would change to black later". Also, black ink was applied, which suggest that there was some attempt at blinding participants. Comment: It was unclear if blinding strategies were used or whether they were adequate.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	This was unclear.
Incomplete outcome data (attrition bias) All outcomes	Low risk	0/70 participants dropped out.
Selective reporting (reporting bias)	Low risk	All outcomes were reported.