Table 1 Baseline patient characteristics
Overall | ICU1/2 group | ICU3/4 group | p value | ||||
|---|---|---|---|---|---|---|---|
(n = 117,742) | % | (n = 71,412, 60.7%) | % | (n = 46,330, 39.3%) | % | ||
Hospital | 495 | 186 | 37.6 | 309 | 62.4 | ||
Age (years) | 69.0 (14.6) | 68.1 (14.8) | 70.3 (14.2) |  < 0.001 | |||
≦51 | 14,990 | 12.7 | 9862 | 13.8 | 5128 | 11.1 |  < 0.001 |
52–63 | 17,921 | 15.2 | 11,321 | 15.9 | 6600 | 14.2 |  < 0.001 |
64–74 | 37,492 | 31.8 | 23,067 | 32.3 | 14,425 | 31.1 |  < 0.001 |
≧75 | 47,339 | 40.2 | 27,162 | 38.0 | 20,177 | 43.6 |  < 0.001 |
Male sex | 70,369 | 59.8 | 42,951 | 60.1 | 27,418 | 59.2 |  < 0.001 |
Emergency hospital admission | 47,602 | 40.4 | 25,917 | 36.3 | 21,685 | 46.8 |  < 0.001 |
Academic hospital | 36,255 | 30.8 | 30,596 | 42.8 | 5659 | 12.2 |  < 0.001 |
Surgery | 95,739 | 81.3 | 60,704 | 85.0 | 35,035 | 75.6 |  < 0.001 |
SOFA score | 4.2 (3.7) | 4.4 (3.7) | 3.9 (3.8) |  < 0.001 | |||
Blood transfusion therapy | |||||||
RBC transfusion | 37,765 | 32.1 | 25,045 | 35.1 | 12,720 | 27.5 |  < 0.001 |
Plasma transfusion | 23,451 | 19.9 | 15,982 | 22.4 | 7469 | 16.1 |  < 0.001 |
Platelet transfusions | 14,706 | 12.5 | 10,283 | 14.4 | 4423 | 9.5 |  < 0.001 |