• Med. J. Aust. · Sep 2001

    Meta Analysis

    Risk of death from methicillin-resistant Staphylococcus aureus bacteraemia: a meta-analysis.

    • M Whitby, M L McLaws, and G Berry.
    • Infection Management Services, Princess Alexandra Hospital, Brisbane, QLD. whitbym@health.qld.gov.au
    • Med. J. Aust. 2001 Sep 3; 175 (5): 264-7.

    ObjectiveTo estimate the risk of death from healthcare-associated (nosocomial) bacteraemia caused by methicillin-resistant Staphylococcus aureus (MRSA), and compare it with that of nosocomial bacteraemia caused by methicillin-sensitive S. aureus (MSSA), by meta-analysis of selected studies.Data SourcesMedline, EMBASE, Current Contents and Cochrane Library were searched for the period January 1978 (or earliest date of the database, if later than 1978) to December 2000.Study SelectionStudies which compared mortality of nosocomial MRSA and MSSA bacteraemia.Data SynthesisNine studies were analysed. All but one found an increased relative risk (RR) of death from MRSA bacteraemia, with RR ranging from 0.89 to 4.94. Meta-analysis showed that patients with MRSA bacteraemia have an RR of death, compared with patients with MSSA bacteraemia, of 2.12 (95% CI, 1.76-2.57) using the fixed-effect method, and 2.03 (95% CI, 1.55-2.65) using the random-effect method.ConclusionMRSA bacteraemia is associated with a real increase in risk of death, further justifying ongoing MRSA surveillance and control in healthcare facilities.

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