Sex: male
|
442 (54.2%)
|
14,434 (59.9%)
|
0.001
|
Age (years)
|
65.2 (14.8)
|
63.4 (15.6)
|
0.001
|
Body mass index (kg/m2)
|
22.9 (4.0)
|
23.8 (3.8)
|
< 0.001
|
APACHE II
|
20.9 (10.5)
|
18.9 (10.2)
|
< 0.001
|
Comorbidities at ICU admission
|
Hypertension
|
335 (41.1%)
|
10,559 (43.8%)
|
0.121
|
Diabetes mellitus
|
80 (9.8%)
|
2275 (9.4%)
|
0.723
|
Ischemic heart disease
|
26 (3.2%)
|
661 (2.7%)
|
0.445
|
Cerebrovascular disease
|
37 (4.5%)
|
1057 (4.4%)
|
0.836
|
Chronic obstructive lung disease
|
59 (7.2%)
|
993 (4.1%)
|
< 0.001
|
Liver disease (LC, hepatitis, fatty liver)
|
42 (5.1%)
|
709 (2.9%)
|
< 0.001
|
Chronic kidney disease
|
152 (18.6%)
|
3749 (15.5%)
|
0.017
|
Anemia (Hb < 10 g/dl)
|
358 (43.9%)
|
7348 (30.5%)
|
< 0.001
|
Cancer
|
214 (26.2%)
|
4147 (17.2%)
|
< 0.001
|
Admission through the emergency department
|
487 (59.7%)
|
12,122 (50.3%)
|
< 0.001
|
Postoperative ICU admission
|
287 (35.2%)
|
10,384 (43.1%)
|
< 0.001
|
Main diagnosis at ICU admission
|
Septic shock
|
56 (6.9%)
|
353 (1.5%)
|
< 0.001
|
Cardiac disease
|
190 (23.3%)
|
8002 (33.2%)
|
< 0.001
|
Neurologic disease
|
111 (13.6%)
|
3237 (13.4%)
|
0.883
|
Kidney failure
|
72 (8.8%)
|
1653 (6.9%)
|
0.029
|
Respiratory insufficiency or failure
|
211 (25.9%)
|
2695 (11.2%)
|
< 0.001
|
Drug intoxication
|
6 (0.7%)
|
170 (0.7%)
|
0.919
|
Trauma
|
6 (0.7%)
|
185 (0.8%)
|
0.918
|
GI bleeding, ischemia, or perforation
|
34 (4.2%)
|
1074 (4.5%)
|
0.695
|
Hemorrhagic shock
|
2 (0.2%)
|
105 (0.4%)
|
0.413
|
Post-cardiac arrest
|
19 (2.3%)
|
312 (1.3%)
|
0.011
|
Others*
|
286 (35.0%)
|
9236 (38.3%)
|
0.327
|
Length of hospital stay (days)
|
16.4 (36.8)
|
11.1 (18.7)
|
< 0.001
|
Length of ICU stay (days)
|
2.6 (9.3)
|
5.3 (26.7)
|
< 0.001
|
All-cause 30-day mortality
|
173 (21.2%)
|
2113 (8.8%)
|
< 0.001
|
30-Day mortality due to diagnosed infection
|
31 (3.8%)
|
260 (1.1%)
|
< 0.001
|