Table 3 Comparison on diagnosis and prognosis of AKI different stages

Age (years)

63.5 ± 16.6

61.7 ± 17.9

63.6 ± 17.3

0.292

Male (%)

375 (70.5)

309 (64.7)

364 (65.0)

0.097

eGFR (mL/min/1.73 m2)

76.9 ± 31.9

81.4 ± 29.4

50.4 ± 39.3

<0.001*

Interval between admission and AKI diagnosed (days)

6 (2,11)

7 (3,14)

3 (1,9)

<0.001*

Diagnosis (%)

<0.001*

 Timely

110 (20.7)

76 (24.6)

430 (76.8)

 Delayed

10 (1.9)

14 (4.5)

22 (3.9)

 Missed

412 (77.4)

219 (70.9)

108 (19.3)

Only 2 SCr detection (%)

38 (7.1)

10 (3.2)

11 (2.0)

<0.001*

Renal prognosis at discharge (%)

<0.001*

 Completely recovery

311 (58.5)

171 (55.3)

146 (26.1)

 Partial recovery

51 (9.6)

42 (13.6)

85 (15.2)

 Loss of renal function

38 (7.1)

38 (12.3)

245 (43.7)

 No data^a

132 (24.8)

58 (18.8)

84 (15.0)

ICU stay (days)

0 (0–2)

0 (0–4)

0 (0–9)

<0.001*

Hospital stay (days)

20.9 ± 18.1

24.3 ± 17.7

22.6 ± 22.2

<0.001*

Hospital costs (thousand CNY)

53.5 (20.8–103.5)

68.9 (33.4–132.9)

54.4 (24.8–132.4)

<0.001*

30-day mortality (%)

121 (22.7)

105 (34.0)

269 (48.0)

<0.0001*