Table 2.

Patient characteristics

VariableAKI (n=2515)No AKI (n=5514)P Value
Age, yr65.9±1655.1±18.4<0.001
Men1472 (58.5)3431 (62.2)0.002
SAPS II score50.1±19.833.6±16.5<0.001
Transfer from ward1214 (48.3)2390 (43.3)<0.001
McCabe score
 11507 (59.9)3928 (71.2)<0.001
 2826 (32.9)1314 (23.8)
 3182 (7.2)272 (4.9)
Admission category
 Medical1747 (69.5)3885 (70.5)<0.001
 Scheduled surgery471 (18.7)769 (13.9)
 Unscheduled surgery297 (11.8)860 (15.6)
Chronic comorbidities
 Heart disease364 (14.5)393 (7.16)<0.001
 Respiratory disease313 (12.5)822 (14.9)0.003
 Liver disease170 (6.8)283 (5.1)0.003
 Immunodeficiency416 (16.5)669 (12.1)<0.001
 Diabetes mellitus401 (15.9)519 (9.4)<0.001
 Myeloma30 (1.2)20 (0.4)<0.001
ARDS832 (33.1)1047 (19)<0.001
Hemodynamic failure1127 (44.8)1576 (28.6)<0.001
Hepatic failure848 (33.7)1102 (20)<0.001
Sepsis1265 (50.3)2841 (51.5)0.3
Nephrotoxic drugs1316 (52.3)3108 (56.4)0.001
ICU mortality543 (21.6)291 (5.3)<0.001
Hospital mortality693 (27.6)448 (8.1)<0.001
  • Data are reported as the mean±SD or n (%) unless otherwise specified. SAPS II, Simplified Acute Physiology Score version II (which can range from 0 to 155); ICU, intensive care unit.