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Table 1 Multivariable logistic regression model results estimating associations between explanatory variables and E. coli BSI 30-day mortalitya

From: Mortality in Escherichia coli bloodstream infections: a multinational population-based cohort study

Variable aOR 95% CI p-value
Region    < 0.001b
 Finland 1.00 referent  
 Calgary 1.52 1.36–1.71 < 0.001
 Sherbrooke 0.87 0.64–1.20 0.403
 Skaraborg 1.31 1.09–1.57 0.004
 Western interior 1.69 1.31–2.18 < 0.001
Location of Onset
 Community-onset 1.00 referent  
 Hospital-onset 2.44 2.25–2.66 < 0.001
3GC-R
 Susceptible 1.00 referent  
 Resistant 1.37 1.20–1.55 < 0.001
Sex
 Female 1.00 referent  
 Male 1.77c 1.52–2.05 < 0.001
Age Category
 < 70-years-old 1.00 referent  
 ≥ 70-years-old 2.21c 1.95–2.52 < 0.001
Interaction - Sex and Age
 Male and ≥ 70 0.73c 0.62–0.87 < 0.001
  1. Abbreviations: BSI Bloodstream infection, aOR Adjusted odds ratio, CI Confidence interval
  2. aModel fits the data based on Hosmer-Lemeshow goodness-of-fit test (p = 0.653)
  3. bOverall p-value for variable estimated using a likelihood ratio test
  4. cExponentiated coefficients are not true aOR due to interaction term – see contrasts in Table 2