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Table 2 Results for contrasts examining interactions between sex and age based on multivariable negative binomial regression modela

From: Increasing incidence and antimicrobial resistance in Escherichia coli bloodstream infections: a multinational population-based cohort study

Contrast statement IRR 95% CI p-value
Females ≥ 70 compared to females < 70 9.37 8.63–10.19  < 0.001
Males ≥ 70 compared to females < 70 9.61 8.83–10.45  < 0.001
Females ≥ 70 compared to males < 70 12.72 11.68–13.86  < 0.001
Males ≥ 70 compared to males < 70 13.04 11.96–14.22  < 0.001
Females ≥ 70 compared to males ≥ 70 0.98 0.90–1.06 0.558
Females < 70 compared to males < 70 1.36 1.24–1.48  < 0.001
  1. IRR Incidence rate ratio; CI Confidence interval
  2. aMultivariable negative binomial regression model estimating the associations between the explanatory variables (region, sex, and age) and E. coli bloodstream infection incidence rate (Table 1)