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Volume 11, Number 4—April 2005

Research

Staphylococcus aureus Bacteremia, Australia

Peter Collignon*Comments to Author , Graeme R. Nimmo†, Thomas Gottlieb‡, Iain B. Gosbell§, and on behalf of the Australian Group on Antimicrobial Resistance
Author affiliations: *The Canberra Hospital, Garran, Australian Capital Territory, Australia; †Queensland Health Pathology Service, Brisbane, Queensland, Australia; ‡Concord Hospital, Concord, New South Wales, Australia; and; §Southwestern Area Pathology Service, Liverpool, New South Wales, Australia

Main Article

Table 1

Bacteremia episodes at individual hospitals*

Hospital
J K L M N O P Q Total
Classification† a a a b b b c d
Beds 368 297 276 199 170 162 72 52 6,194
Years studied 4‡ 4‡ 4‡ 4‡ 4‡ 4‡ 4‡
Admissions over study period 104,534 58,549 92,114 64,311 41,690 48,900 18,223 15,069 2,013,534
Admissions >24 h over study period 50,018 25,617 36,322 31,259 10,556 31,681 13,055 2,894 730,125
Mean length of stay (day cases included) 4.1 4.49 3.06 3.37 5.4 3.60 5.10 2.88
OBDs (including day-only patients) 428,589 262,592 281,869 216,728 225,126 176,040 92,937 43,399 7,491,240
OBDs (excluding day-only patients) 374,073 229,660 226,077 183,676 192,874 158,821 87,769 31,224 6,207,832
Total S. aureus bacteremia 155 123 72 44 135 62 11 14 3,192
Total BSIs over study period (all orgs) 653 338 351 282 881 274 67 63 12,771
Total BSI rate per hosp admissions (x1,000) 6.25 5.77 3.81 4.39 21.13 5.60 3.68 4.18

*MSSA, methicillin-susceptible Staphylococcus aureus; MRSA, methicillin-resistant S. aureus; OBDs, occupied bed days; BSI, bloodstream infection; orgs, microorganisms.
†Hospital classification: a, principal referral: metropolitan (>20,000 acute weighted separations per year) and rural (>16,000 acute weighted separations); b, large metropolitan (>10,000 acute weighted separations); c, private hospital; d, medium sized (metropolitan and rural 2,000 acute or acute weighted to 5,000 acute weighted separations).
‡1999–2002.
§1999–2001.
¶1999–2000.

Main Article

1Australian Group on Antimicrobial Resistance contributors to this study were the following: Thomas Gottlieb, Concord Hospital; David McGechie, Denise Daley, Fremantle Hospital; John Ferguson, John Hunter Hospital; James Branley, Nepean Hospital; Graeme R. Nimmo, Princes Alexandria Hospital; Gary Lum, Royal Darwin Hospital; Alistair McGregor, Royal Hobart Hospital; Clarence Fernandes, Royal North Shore Hospital; Iain Gosbell, Archie Darbar, South West Area Health Service, New South Wales; Peter Collignon, Jan Roberts, Canberra Hospital.

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