Berridge 1998.

Methods	Surgical teams were randomised to one of two groups. Randomisation using a calculator randomisation function. Details of allocation concealment not given. Perforation test ‐ 'high pressure of water'
Participants	Surgeon, assistant and scrub nurse. Vascular surgery. 258 single gloves and 248 double outer gloves were collected.
Interventions	Single versus standard double gloves
Outcomes	Number of perforations.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear