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Table 3 Incidence rate ratios of Staphylococcus aureus bloodstream infections for services provided by public hospitals in Queensland, Australia.

From: Improved hospital-level risk adjustment for surveillance of healthcare-associated bloodstream infections: a retrospective cohort study

Medical services GEE Poisson with a log link
   IRR SE (95% CI) P-value
Alcohol/Drugs 0.81 0.07 (0.69 to 0.95) .011
Diabetes 0.53 0.11 (0.36 to 0.80) .002
Infectious diseases 3.91 0.82 (2.59 to 5.90) < .001
Plastic surgery 0.57 0.09 (0.42 to 0.79) .001
Maintenance renal dialysis 1.82 0.20 (1.47 to 2.26) < .001
Oncology 1.73 0.14 (1.47 to 2.04) < .001
QIC 817.95     
  1. aAR 2 correlation
  2. exchangeable standard errors were scaled by square root of Pearson χ2-based dispersion.