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Table 4 Incidence rate ratios of intravascular device related Staphylococcus aureus blood stream 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 linka
   IRR SE (95% CI) P-value
Infectious diseases 3.35 0.89 (1.99 to 5.64) < .001
Plastic surgery 0.46 0.13 (0.26 to 0.81) .008
Maintenance renal dialysis 1.50 0.25 (1.08 to 2.08) .016
Oncology 1.89 0.26 (1.44 to 2.48) < .001
QIC 507.79     
  1. aAR 2 correlation
  2. exchangeable standard errors were scaled by square root of Pearson χ2-based dispersion.