Table 2.

Demographics and comparison of AKI and ACRF groupsa

CharacteristicsAKIACRFP
Total47488
Age (yr; median [IQR])76.0 (66.9 to 83.9)80.5 (74.5 to 84.9)0.003
Incidence (pmp/yr)1811336<0.001
Male (n [%])254 (53.6)50 (56.8)0.658
Renal imaging done (n [%])227 (47.9)67 (76.1)<0.001
RRT received (n [%])37 (7.8)11 (12.5)0.203
Treated by nephrologists (n [%])119 (25.1)45 (51.1)<0.001
Full renal recovery (n [%])321 (67.7)31 (35.2)<0.001
In-hospital mortality (n [%])155 (32.7)35 (39.8)0.244
90-d mortality (n [%])196 (41.4)43 (48.9)0.233
6-mo mortality (n [%])236 (49.8)55 (62.5)0.038
Median duration of stay (d; median [IQR])17.0 (9.0 to 33.0)12.5 (5.3 to 26.0)0.009
  • a AKI, acute kidney injury; ACRF, acute or chronic renal failure; IQR, interquartile range; pmp, per million population; RRT, renal replacement therapy.