Fig. 2

Intervention bundle adherence by quarter, from Q1 year 1 to Q4 year 3, after local implementation of the intervention (N = 916 observations). Compliance with each element of preoperative preparation (red = correct hair removal, green = correct skin disinfection, turquoise = correct administration of antibiotic prophylaxis) is shown as a rate with 95% CIs per quarter. In purple, the achievement of the entire bundle (simultaneous fulfilment of all three elements) is shown