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Table 3 Hazard ratios (95% confidence intervals) for mortality according to the duration of acute kidney injury

From: Duration of acute kidney injury and mortality in critically ill patients: a retrospective observational study

 

Unadjusted HR

Adjusted HR*

Duration groups

In-hospital mortality

Overall mortality

In-hospital mortality

Overall mortality

No AKI (n = 488)

1 (Reference)

1 (Reference)

1 (Reference)

1 (Reference)

1st tertile (n = 552)

2.07 (1.41–3.02)

1.77 (1.43–2.18)

3.22 (2.03–5.13)

1.99 (1.48–2.67)

2nd tertile (n = 497)

3.83 (2.69–5.46)

2.97 (2.43–3.63)

4.29 (2.83–6.51)

2.67 (2.04–3.50)

3rd tertile (n = 437)

4.43 (3.12–6.30)

3.85 (3.15–4.70)

3.64 (2.48–5.35)

2.85 (2.24–3.64)

RRT (n = 169)

8.97 (6.18–13.02)

5.73 (4.51–7.27)

5.57 (3.76–8.25)

3.83 (2.96–4.95)

  1. HR, Hazard ratio; AKI, Acute kidney injury; RRT, Renal replacement therapy.
  2. *Adjusted for age, sex, APACHE ІІ score, primary diagnosis, underlying CKD, history of malignancy, the need for mechanical ventilation, the use of vasoactive drugs, and AKI stages.