Table 1.

Operational definitions for measures

Measure	Numerator	Denominator	Calculation
Hand hygiene compliance rate	Number of hand hygiene actions performed (ie, hand washing with soap and water or rubbing hands with alcohol-based hand sanitiser). Hand hygiene action is only valid once with every hand hygiene opportunity.	Number of hand hygiene opportunities observed	Hand hygiene compliance (%)=number of hand hygiene actions performed/ number of hand hygiene opportunities observed x 100
Alcohol hand rub usage	Not applicable	Not applicable	Usage of alcohol hand rub in litres
Methicillin-resistant Staphylococcus aureus (MRSA) rate	Number of MRSA positive patients on exit	Number of patients screened	MRSA rate=number of MRSA positive patients on exit/number of patients screened