| Total | No AKI | AKI | P value |
---|---|---|---|---|
Number of patients | 73,016 | 71,381 | 1635 (2.2%) | Â |
Age/years (median (IQR)) | 56.8 (38–76) | 56.5 (38–76) | 71.0 (61–84) | <0.001 |
Male n (%) | 38,568 (52.8) | 37,706 (53.0) | 862 (53) | NS |
LOS/days (mean, IQR)) | 7.55 (1–8) | 7.0 (1–7) | 31.1 (11–41) | <0.001 |
Mortality at discharge (% of whole population) | 2918 (3.9) | 2368 (3.3) | 550 (33.6) | <0.001 |
Total mortality at 90Â Days | 5546 (7.6) | 4830 (6.8) | 689 (42.1) | <0.001 |
Total mortality at 1Â year | 9088 (12.4) | 8301 (11.6) | 787 (48.1) | <0.001 |
Number of patients readmitted during follow-up (until censor 30/9/2011) (%) | 18,971 (26.0) | 18,709 (26.2) | 342 (21.0) | <0.001 |
eGFR 1st measurement (ml/min/1.73m2) (median (IQR)) | 76.4 (57.2–92.1) | 76.5 (57.5–92.2) | 73.2 (45–88.5) | <0.001 |
eGFR minimum (ml/min/1.73m2) (median (IQR)) | 73.1 (54.3–89.2) | 74.1 (55.6–89.8) | 33.3 (18.0–41.5) | <0.001 |
eGFR on 1st measurement <45/ml/min/1.73m2 (%) | 7281 (10.0) | 6872 (9.6) | 409 (25.0) | <0.001 |
eGFR minimum <45/ml/min/1.73m2 (%) | 4372 (6.0) | 4157 (5.8) | 215 (13.1) | <0.001 |
Creatinine on first measurement >177 μmol/L (>2 mg/dL)(%) | 2290 (3.1) | 2137 (3.0) | 153 (9.4) | <0.001 |
Creatinine minimum >177 μmol/L (>2 mg/dL)(%) | 1022 (1.4) | 949 (1.3) | 73 (4.5) | <0.001 |
Co-morbidities | ||||
 Diabetes mellitus n (%) | 7571 (10.4) | 7227 (10.0) | 344 (21.0) | <0.001 |
 Hypertension n (%) | 15,503 (21.2) | 14,877 (20.8) | 626 (38.3) | <0.001 |
 Ischaemic heart disease n (%) | 4001 (5.5) | 3832 (5.4) | 169 (10.3) | <0.001 |
 Heart failure n (%) | 2460 (3.4) | 2183 (3.1) | 227 (13.9) | <0.001 |
 Vascular disease n (%) | 762 (1.0) | 715 (1.0) | 47 (2.9) | <0.001 |
 Malignancy n (%) | 5518 (7.6) | 5225 (7.3) | 293 (17.9) | <0.001 |
 Composite of Infection n (%) | 4920 (6.7) | 4457 (6.2) | 463 (28.3) | <0.001 |
 Liver Disease n (%) | 1351 (1.9) | 1167 (1.63) | 184 (11.3) | <0.001 |
 Composite of GI blood loss or hypovolemia n (%) | 2058 (2.8) | 1910 (2.7) | 148 (9.1) | <0.001 |
 CRP measurement | 30,688 (42) | 29,146 (40) | 1542 (94) | <0.001 |
 Average CRP (in those who had CRP measured) | 88 | 83 | 174 | <0.001 |