Table 1.

Selection criteria.

	Inclusion criteria	Exclusion criteria
Population	Adult population undergoing any surgical procedure (elective or emergency)	Paediatric population (age <18 years)
Intervention	Use of waxing or epilation for preoperative hair removal	–
Comparator	Any other method of preoperative hair removal, or no hair removal	–
Outcome	Incidence of SSI at 30 days according to any diagnostic criteria	–
Study design	Randomised control trials Quasi-randomised control trial Observational studies	Case reports, case series Systematic and narrative reviews Letters Abstract only articles