Skip to main content

Table 4 Key outcomes by final acute kidney injury status

From: Acute kidney injury prevalence, progression and long-term outcomes in critically ill patients with COVID-19: a cohort study

  Overall Non-AKI AKI P value
Outcome (n = 313) (n = 73) (n = 240)  
Kidney replacement therapy use in ICU 100 (32%) 1 (1%) 99 (41%)  < 0.001a
90-day mortalityb 92 (29%) 10 (14%) 82 (34%)  < 0.001c
Dialysis dependence at hospital discharge (in survivors)     
No 214 (96%) 64 (100%) 150 (95%)  
Yes 8 (4%) 0 (0%) 8 (5%) 0.109a
Dialysis dependence at 90 days (in survivors)     
No 188 (95%) 50 (94%) 138 (96%)  
Yes 9 (5%) 3 (6%) 6 (4%) 0.704a
(Missing) 24 10 14  
Renal recovery at discharged N/A N/A 129/158 (81.6%) -
Renal recovery at 90 dayse N/A N/A 130/143 (90.9%) -
  1. AKI, acute kidney injury; ICU, intensive care unit
  2. a P-value calculated from Fisher’s exact test
  3. b 88 patients died in ICU, 4 patients died outside of ICU (3 in hospital, 1 after hospital discharge)
  4. c P-value calculated from a Cox proportional hazards model using time-updated AKI diagnosis as covariate
  5. d Recovery at discharge is defined as having serum creatinine of < 1.5 times of baseline or being dialysis independent at discharge (within the population of survivors only)
  6. e Recovery at 90 days is defined as having serum creatinine of < 1.5 times of baseline or being dialysis independent at discharge (within the population of survivors only). Note there are 27 missing observations