Essential data to collect are the patients’ age and gender, antimicrobial agent, dose per administration, number of doses per day and route of administration. Besides antibiotics, also antifungals, antimycotics, antivirals, antibiotics for the treatment of tuberculosis and antimalarials are surveyed. Other mandatory variables include the anatomical site of infection or prophylaxis according to a list of provided reasons for treatment or prophylaxis, indication for therapy (community versus hospital acquired infection or prophylaxis) and whether the treatment choice is determined by detected micro-organisms and available microbiological or biomarker data. For the optional HAI module, extra details on invasive devices are collected (e.g. peripheral vascular catheter, indwelling urinary catheter etc.).
Denominator data are the number of admitted patients and the number of beds in each department.