Table 1 Characteristics of participants by quartile
Total | First quartile | Second quartile | Third quartile | Fourth quartile | |
|---|---|---|---|---|---|
(n = 72,214) | (n = 18,335) (25.4%) | (n = 18,887) (26.2%) | (n = 17,843) (24.7%) | (n = 17,149) (23.8%) | |
Age (y), median (IQR) | 71 (57–80) | 71 (58–80) | 71 (57–79) | 70 (55–79) | 72 (60–81) |
Sex (male), n (%) | 44,534 (61.7) | 11,126 (60.68) | 11,663 (61.8) | 11,173 (62.6) | 10,572 (61.7) |
BMI category, n (%) | |||||
< 18.5 | 10,360 (14.7) | 2704 (15.1) | 2525 (13.6) | 2577 (14.8) | 2554 (15.3) |
≥ 18.5 to < 23 | 28,081 (39.8) | 7136 (39.9) | 7501 (40.5) | 6760 (38.9) | 6684 (40.0) |
≥ 23 to < 27.5 | 22,151 (31.4) | 5583 (31.2) | 5847 (31.5) | 5396 (31.1) | 5325 (31.8) |
≥ 27.5 | 9931 (14.1) | 2453 (13.7) | 2665 (14.4) | 2648 (15.2) | 2165 (12.9) |
JROD, median (IQR) | 0.05 (0.02–0.18) | 0.05 (0.02–0.17) | 0.06 (0.02–0.18) | 0.05 (0.01–0.19) | 0.05 (0.02–0.17) |
Chronic organ insufficiency, n (%) | |||||
Heart failure | 1202 (1.7) | 505 (2.8) | 221 (1.2) | 192 (1.1) | 284 (1.7) |
Respiratory failure | 1060 (1.5) | 418 (2.3) | 226 (1.2) | 209 (1.2) | 207 (1.2) |
Renal dialysis | 3639 (5.0) | 1006 (5.5) | 1080 (5.7) | 816 (4.6) | 737 (4.3) |
Type of hospital, n (%) | |||||
University hospital | 28,969 (40.1) | 8999 (49.1) | 8575 (45.4) | 7855 (44.0) | 3540 (20.6) |
Nonuniversity hospital | 43,245 (59.9) | 9336 (50.9) | 10,312 (54.6) | 9988 (56.0) | 13,609 (79.4) |
Admission source, n (%) | |||||
Operating room | 17,060 (23.6) | 5912 (32.2) | 4018 (21.3) | 3813 (21.4) | 3317 (19.3) |
Emergency department | 44,682 (61.9) | 8133 (44.4) | 12,434 (65.8) | 11,960 (67.0) | 12,155 (70.9) |
Ward | 5377 (7.5) | 2397 (13.1) | 1240 (6.6) | 1032 (5.8) | 708 (4.1) |
Transfer from another hospital | 3737 (5.2) | 1412 (7.7) | 660 (3.5) | 824 (4.6) | 841 (4.9) |
Other care unit | 1357 (1.9) | 481 (2.6) | 534 (2.8) | 214 (1.2) | 128 (0.8) |
Emergency surgery, n (%) | 22,421 (31.1) | 7506 (40.9) | 5614 (29.7) | 5110 (28.6) | 4191 (24.4) |
Diagnosis at ICU admission, n (%) | |||||
Cardiovascular disease | 26,880 (37.2) | 7384 (40.3) | 7087 (37.5) | 6563 (36.8) | 5846 (34.1) |
Respiratory disease | 9131 (12.6) | 2409 (13.1) | 2039 (10.8) | 2241 (12.6) | 2442 (14.2) |
GI and liver disease | 9882 (13.7) | 3252 (17.7) | 2395 (12.7) | 1908 (10.7) | 2327 (13.6) |
Neurologic disease | 10,603 (14.7) | 2098 (11.4) | 3464 (18.3) | 2766 (15.5) | 2275 (13.3) |
Sepsis | 2607 (3.6) | 674 (3.7) | 685 (3.6) | 500 (2.8) | 748 (4.4) |
Trauma | 5311 (7.4) | 612 (3.3) | 1367 (7.2) | 1761 (9.9) | 1571 (9.2) |
After cardiac resuscitation, n (%) | 4571 (6.3) | 1004 (5.5) | 1350 (7.2) | 1369 (7.7) | 848 (4.9) |
IMV during the 1st ICU stay, n (%) | 33,333 (46.2) | 9039 (49.3) | 8436 (44.7) | 8365 (46.9) | 7493 (43.7) |
Venoarterial ECMO, n (%) | 1563 (2.2) | 498 (2.7) | 452 (2.4) | 413 (2.3) | 200 (1.2) |
Venovenous ECMO, n (%) | 520 (0.7) | 178 (1.0) | 137 (0.7) | 125 (0.7) | 80 (0.5) |
CRRT, n (%) | 6350 (8.8) | 2015 (11.0) | 1841 (9.8) | 1366 (7.7) | 1128 (6.6) |
In-hospital mortality, n (%) | 10,704 (14.8) | 2725 (14.9) | 2768 (14.7) | 2738 (15.3) | 2473 (14.4) |