Department | Total | ICU | Other Internal | Surgery | Nephrology | P value |
---|---|---|---|---|---|---|
(n = 1401) | (n = 356) | (n = 520) | (n = 422) | (n = 103) | ||
Age (years) | 63.2 ± 37.2 | 64.4 ± 17.7 | 66.2 ± 17.9 | 59.7 ± 14.5 | 57.7 ± 18.4 | <0.001* |
Male (%) | 939 (67.0) | 249 (69.9) | 352 (67.7) | 282 (66.8) | 56 (54.4) | 0.030* |
City (%) | 816 (62.0) | 214 (65.0) | 363 (71.7) | 191 (50.1) | 48 (47.5) | <0.001* |
Admission eGFR (%) | Â | Â | Â | Â | Â | <0.001* |
  ≥ 90 (mL/min/1.73 m2) | 461 (32.9) | 117 (32.8) | 155 (29.8) | 184 (43.6) | 5 (4.8) |  |
 60–89 (mL/min/1.73 m2) | 357 (25.5) | 86 (24.2) | 134 (25.8) | 130 (30.8) | 7 (6.8) |  |
 30–59 (mL/min/1.73 m2) | 266 (19.0) | 75 (21.1) | 123 (23.6) | 55 (13.0) | 13 (12.6) |  |
  < 30 (mL/min/1.73 m2) | 317 (22.6) | 78 (21.9) | 108 (20.8) | 53 (12.6) | 78 (75.7) |  |
Comorbidities (%) | ||||||
 Cardiovascular disease | 825 (58.9) | 234 (65.7) | 307 (59.0) | 249 (59.0) | 35 (34.0) | <0.001* |
 Diabetes | 251 (17.9) | 68 (19.1) | 117 (22.5) | 57 (13.5) | 9 (8.7) | <0.001* |
 Pre-existing CKD | 116 (8.3) | 25 (7.0) | 50 (9.6) | 24 (5.7) | 17 (16.5) | 0.002* |
 Chronic lung disease | 91 (6.5) | 30 (8.4) | 36 (6.9) | 11 (2.6) | 14 (13.6) | <0.001* |
 Chronic liver disease | 106 (7.6) | 28 (7.9) | 47 (9.0) | 30 (7.1) | 1 (1.0) | 0.042* |
 Malignancy | 415 (29.6) | 67 (18.8) | 201 (38.7) | 133 (31.5) | 14 (13.6) | <0.001* |
Susceptible risk factors (%) | ||||||
 Using diuretics | 451 (32.2) | 145 (40.7) | 175 (33.7) | 114 (27.0) | 17 (16.5) | <0.001* |
 Using nephrotoxic antibiotics | 418 (29.8) | 154 (43.3) | 207 (39.8) | 41 (9.7) | 16 (15.5) | <0.001* |
 Using contrast Agent | 206 (14.7) | 33 (9.3) | 87 (16.7) | 83 (19.7) | 3 (2.9) | <0.001* |
 Hypovolemia | 521 (37.2) | 220 (62.0) | 112 (21.5) | 182 (43.1) | 7 (6.8) | <0.001* |
 Operation | 514 (36.7) | 119 (33.4) | 46 (8.8) | 346 (82.0) | 3 (2.9) | <0.001* |
 Sepsis | 154 (11.0) | 78 (21.9) | 49 (9.4) | 21 (5.0) | 6 (5.8) | <0.001* |
Oliguria (%) | 300 (21.4) | 121 (34.0) | 89 (17.1) | 43 (10.2) | 47 (45.6) | <0.001* |
Extra-renal organs failure | 674 (48.1) | 254 (71.3) | 329 (63.3) | 188 (44.5) | 25 (24.2) | <0.001* |
AKI Stage (%) | Â | Â | Â | Â | Â | <0.001* |
 1 | 532 (38.0) | 107 (20.1) | 224 (42.1) | 189 (35.5) | 12 (2.3) |  |
 2 | 309 (22.1) | 67 (21.7) | 120 (38.8) | 112 (36.2) | 10 (3.2) |  |
 3 | 560 (40.0) | 182 (32.5) | 176 (31.4) | 121 (21.6) | 81 (14.5) |  |
AKI classification (%) | Â | Â | Â | Â | Â | 0.068 |
 Pre-renal | 589 (42.1) | 121 (20.5) | 224 (38.0) | 239 (40.6) | 5 (0.8) |  |
 Renal | 731 (52.2) | 229 (31.3) | 279 (38.1) | 136 (18.6) | 88 (12.0) |  |
 Post-renal | 80 (5.7) | 6 (7.5) | 17 (21.2) | 47 (58.8) | 10 (12.5) |  |
Interval between admission and AKI diagnosed (days) | 5 (1,11) | 4 (1,11) | 5 (1,12) | 7 (3,12) | 1 (0,2) | <0.001* |
Diagnosis (%) | ||||||
 Timely | 616 (44.0) | 192 (54.2) | 243 (46.7) | 92 (21.8) | 88 (85.4) | <0.001* |
 Delayed | 46 (3.3) | 14 (3.9) | 15 (2.9) | 13 (3.1) | 4 (3.9) | 0.008* |
 Missed | 739 (52.7) | 149 (41.9) | 262 (50.4) | 317 (75.1) | 11 (10.7) | <0.001* |
Only 2 SCr detection (%) | 59 (4.2) | 8 (2.25) | 36 (6.9) | 14 (3.3) | 1 (1.0) | <0.001* |
Renal prognosis (%) | Â | Â | Â | Â | Â | <0.001* |
 Complete recovery | 628 (44.8) | 132 (37.1) | 193 (37.1) | 274 (64.9) | 29 (28.2) |  |
 Partial recovery | 178 (12.7) | 28 (7.9) | 76 (14.6) | 50 (11.8) | 24 (23.3) |  |
 Loss of renal function | 321 (22.9) | 122 (34.3) | 112 (21.5) | 44 (10.4) | 43 (41.7) |  |
 No dataa | 274 (19.6) | 74 (20.8) | 139 (26.7) | 54 (12.8) | 7 (6.8) |  |
 RRT dependence | 228 (16.3) | 88 (24.7) | 46 (8.8) | 34 (8.1) | 60 (58.3) | <0.001* |
ICU stay (days) | 0 (0–5) | 11 (5–21) | 0 (0–0) | 1 (0–2) | 0 (0–0) | <0.001* |
Hospital stay (days) | 22.3 ± 19.8 | 23.6 ± 22.2 | 19.6 ± 17.7 | 26.0 ± 21.1 | 17.3 ± 9.9 | <0.001* |
Costs (thousand CNY) | 57.2 (25.0–121.6) | 106.6 (50.9–199.1) | 34.3 (15.0–64.8) | 80.6 (39.3–134.6) | 23.8 (14.7–37.0) | <0.001* |
30-day mortality | 495 (35.3%) | 227 (63.8%) | 204 (39.2%) | 51 (12.1%) | 13 (12.6%) | <0.001* |