Underwood 1993.

Methods	Cases were randomised to one of two groups using sealed envelopes. Details of method of randomisation not given. Perforation test ‐ gloves were filled with water, squeezed and observed for leaks.
Participants	Surgeon and assistant. Cardiac surgery ‐ sternal closure. 40 double inner gloves and 40 latex/cloth inner gloves were collected.
Interventions	Standard double versus latex inner with cloth outer glove
Outcomes	Number of perforations.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Low risk	A ‐ Adequate