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

Table 2 Multivariate regression analysis

A. Multivariate poisson regression analysis showing the association between acute kidney injury and mortality
Group	Number	Deaths	Person-years	Mortality rate deaths/person-year (95% CI)	Crude MRR (95% CI)	Adjusted MRR^a (95% CI)	Adjusted MRR^b (95% CI)
No AKI	92,509	31,530	2.3 x 10⁵	0.135 (0.134, 0.137)	1	1	1
AKI	5,273	2,943	7.6 x 10³	0.387 (0.374, 0.402)	2.87 (2.76, 2.97)	2.14 (2.06, 2.22)	1.15 (1.09, 1.21)

^aModel 1: adjusted for age, gender, myocardial infarction and diabetes mellitus with complications. ^bModel 2: adjusted for age, gender, simplified acute physiology score-III, myocardial infarction, cerebrovascular disease, diabetes mellitus with complications, moderate to severe liver disease, cancer and dementia. AKI, acute kidney Injury; MRR, mortality rate ratio.

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