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Table 4 Multivariate poisson regression for secondary outcomes

From: Evolution of chronic renal impairment and long-term mortality after de novo acute kidney injury in the critically ill; a Swedish multi-centre cohort study

  Multivariate poisson regression analysis
Group Patients, number Events, number Person-years IR event/person-year (95% CI) Crude IRR (95% CI) Adjusted IRRa (95% CI)
A. CKD      
No AKI 92,509 649 1.7 × 105 0.0038 (0.0035, 0.0041) 1 1
AKI 5,273 193 4.9 × 103 0.0340 (0.0341, 0.0452) 10.3 (8.8, 12.1) 7.6 (5.5, 10.4)
B. ESRD       
No AKI 92,509 116 1.7 × 105 0.0007 (0.0006, 0.0008) 1 1
AKI 5,273 65 5.2 × 103 0.0125 (0.0098, 0.0160) 18.6 (13.7, 25.2) 22.5 (12.9, 39.1)
  1. aAdjusted for simplified applied physiology score version III, age, gender and diabetes. CKD, chronic kidney disease; ESRD, end-stage renal disease; AKI, acute kidney injury; IR, incidence rate; IRR, incidence rate ratio.