Table 2.

Key outcome measures

Objective	Outcome measure
Primary objectives
To estimate the total prevalence of HAIs among inpatients aged ≥18 in public acute care hospitals in Australia	Total no of patients classified as having a HAI divided by the total no of patients surveyed, weighted by the probability of sampling
To describe the HAIs by site, type of patient, specialty, type of facility and geographical location	Of the patients with a HAI, the proportion by Infection site Elective or emergency Gender Age Ward specialty Facility type
Secondary objectives
Prevalence of patients managed under transmission-based precautions isolation in a single room	Total no of patients cared for under transmission-based precautions divided by the total number of patients surveyed, overall (weighted by the probability of sampling), by hospital, by ward specialty
Prevalence of patients with an indwelling urinary catheter device	Total no of patients with a urinary catheter divided by the total no of patients surveyed, overall, by hospital, by ward specialty
Prevalence of patients with vascular access device(s)	Total no of patients with a vascular access device divided by the total no of patients surveyed Of those with a vascular device, the proportion by type of device, overall, by hospital, by ward specialty
Prevalence of patients with a multidrug-resistant organism (infection or colonisation)	Total no of patients infected or colonised with a multidrug-resistant organism divided by the total no of patients surveyed Of those with a multidrug-resistant organism, the proportion by organism, overall, by hospital, by ward specialty

HAI, healthcare-associated infection.