Measures of healthcare-associated Staphylococcus aureus bloodstream infections in 2012–13
This technical note describes the specification used to report the indicator healthcare-associated Staphylococcus aureus (S. aureus) bloodstream infections in Australian public hospitals in 2012–13. This technical note builds on the development work for the peer group classification system presented in the Hospital Performance: Healthcare-associated Staphylococcus aureus bloodstream infections in 2011–12, Technical Supplement. The additional work conducted to review peer groups for the latest publication is presented in Appendix 1.
Data were sourced from the National Staphylococcus aureus Bacteraemia Data Set (2012–13). Data from the Admitted Patient Care National Minimum Data Set (2011–12) were used to determine hospital peer groups. The information shown is for occurrences of bloodstream infection caused by S. aureus, attributable to receiving care provided in hospital.
Data for public hospitals are provided by state and territory health authorities and by individual private hospitals and hospital groups for the private sector.
Cases of healthcare-associated S. aureus bloodstream infection
Number of cases of healthcare-associated S. aureus bloodstream infection reported at this hospital.
About the indicator
Healthcare-associated S. aureus bloodstream infections are diagnosed using two factors: firstly by a positive blood test for S. aureus, and secondly a decision by an infection control specialist that the infection has occurred while receiving care at hospital.
To see more about this measure view the specification for this data element on Australia’s metadata online registry at METeORExternal link, opens in a new window.[http://meteor.aihw.gov.au/content/index.phtml/itemId/559228].
Days of patient care under surveillance
The total number of patient days under surveillance by infection control surveillance systems at this hospital.
About the indicator
Patient days under surveillance are those days, or parts of days, that admitted patients at this hospital were covered by the hospital’s infection surveillance program.
The coverage of hospital infection surveillance programs may be affected by the exclusion of certain wards from surveillance (such as psychiatric wards and children’s wards).
To see more about this measure view the specification for this data element on Australia’s metadata online registry at METeORExternal link, opens in a new window.[http://meteor.aihw.gov.au/content/index.phtml/itemId/559230].
Rate of healthcare-associated S. aureus bloodstream infection
Healthcare-associated Staphylococcus aureus (including MRSA) bloodstream infections per 10,000 days of patient care under surveillance.
About the indicator
The rate of S. aureus bloodstream infections associated with care provided at this hospital. Cases include both methicillin- or multi-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive Staphylococcus aureus (MSSA).
The rate and patient days under surveillance are not reported for hospitals with fewer than 5,000 days of patient care under surveillance in a year. Rates have been rounded to two decimal places.
To see more about this measure view the data specification for this indicator on Australia’s metadata online registry at METeORExternal link, opens in a new window.[http://meteor.aihw.gov.au/content/index.phtml/itemId/558746].
National Staphylococcus aureus Bacteraemia Data Collection, 2012–13External link, opens in a new window.[http://meteor.aihw.gov.au/content/index.phtml/itemId/559233]
Admitted Patient Care National Minimum Dataset, 2011–12 (for public hospital peer grouping)External link, opens in a new window.[http://meteor.aihw.gov.au/content/index.phtml/itemId/466132]
Peer groups have not been modified from the previously published report Hospital Performance: Healthcare-associated Staphylococcus aureus bloodstream infections in 2011–12. However, two hospitals (Hervey Bay Hospital and Hornsby and Ku-Ring-Gai Hospital) have since changed peer groups according to the AIHW peer classification system, the Performance Authority has not applied this change and these hospitals remain in the same peer group as reported in the 2011–12 report.