Table 4.

Adjusted all-cause mortality HRs associated with AKI for patients with renal recovery or without deterioration of kidney function

Baseline eGFR (ml/min per 1.73 m2)	With AKI (n [%])	No AKI (n [%])	Adjusted Mortality HRa	95% CI
All	25,564	462,394	1.47	1.43 to 1.51
≥90	9983 (39.1)	176,409 (38.2)	1.52	1.46 to 1.59
≥60, <90	9630 (37.7)	217,931 (47.1)	1.39	1.33 to 1.45
≥45, <60	3915 (15.3)	50,694 (11.0)	1.39	1.31 to 1.48
≥30, <45	2036 (8.0)	17,360 (3.8)	1.21	1.12 to 1.30

A patient is considered to have recuperated or not had deterioration of kidney function when there is no decrease from the baseline eGFR to the eGFR after discharge > 10% of the baseline eGFR. When postdischarge creatinine was missing, postdischarge eGFR was calculated using imputed creatinine by multiple imputation; however, a baseline eGFR value was required to be included. A patient may have been included in the “no AKI” group because the ratio of the highest to lowest creatinine within the baseline period was <1.5 but still not included in this analysis when eGFR decrease was >10% when baseline and postdischarge eGFR values were compared.

^aAdjusted for demographics, comorbidities and medication use, and hospitalization details. The reference is the “no AKI” group.