| Unmatched groups | Propensity score-matched groups | ||||
---|---|---|---|---|---|---|
Certified (n = 30,588) | Non-certified (n = 36,317) | P value | Certified (n = 26,673) | Non-certified (n = 26,673) | P value | |
Sedative, n (%) | 18,727 (61) | 15,349 (42) |  < 0.001 | 15,743 (59) | 12,633 (47) |  < 0.001 |
 Propofol | 10,711 (35) | 6436 (18) |  < 0.001 | 8831 (33) | 5545 (21) |  < 0.001 |
 Dexmedetomidine | 11,291 (37) | 6842 (19) |  < 0.001 | 9479 (36) | 5617 (21) |  < 0.001 |
 Midazolam | 8143 (27) | 7847 (22) |  < 0.001 | 6658 (25) | 6516 (24) | 0.150 |
Opioid, n (%) | 15,863 (52) | 7934 (22) |  < 0.001 | 13,189 (49) | 6854 (26) |  < 0.001 |
 Fentanyl | 15,400 (50) | 7175 (20) |  < 0.001 | 12,750 (48) | 6318 (24) |  < 0.001 |
 Morphine | 632 (2.1) | 817 (2.2) | 0.10 | 578 (2.2) | 584 (2.2) | 0.86 |
Neuromuscular blockade, n (%) | 3132 (10) | 1182 (3.3) |  < 0.001 | 2546 (9.5) | 1055 (4.0) |  < 0.001 |
 Rocuronium | 2602 (8.5) | 962 (2.6) |  < 0.001 | 2130 (8.0) | 860 (3.2) |  < 0.001 |
 Vecuronium | 578 (1.9) | 225 (0.6) |  < 0.001 | 452 (1.7) | 200 (0.7) |  < 0.001 |
Vasopressor, n (%) | 12,471 (41) | 10,731 (30) |  < 0.001 | 10,172 (38) | 9370 (35) |  < 0.001 |
 Noradrenaline | 10,734 (35) | 6701 (19) |  < 0.001 | 8673 (33) | 6063 (23) |  < 0.001 |
 Arginine vasopressin | 2473 (8.1) | 710 (2.0) |  < 0.001 | 1922 (7.2) | 677 (2.5) |  < 0.001 |
 Dopamine | 2751 (9.0) | 5469 (15) |  < 0.001 | 2309 (8.7) | 4623 (17) |  < 0.001 |
 Adrenaline | 698 (2.3) | 351 (1.0) |  < 0.001 | 550 (2.1) | 312 (1.2) |  < 0.001 |
Inotropic agent, n (%) | 2834 (9.3) | 1795 (4.9) |  < 0.001 | 2380 (8.9) | 1471 (5.5) |  < 0.001 |
 Dobutamine | 2650 (8.7) | 1729 (4.8) |  < 0.001 | 2232 (8.4) | 1429 (5.4) |  < 0.001 |
 PDE inhibitor | 313 (1.0) | 118 (0.3) |  < 0.001 | 253 (0.9) | 81 (0.3) |  < 0.001 |
Sivelestat, n (%) | 1255 (4.1) | 2548 (7.0) |  < 0.001 | 1096 (4.1) | 2057 (7.7) |  < 0.001 |
 High-dose methylprednisolone, n (%) | 4074 (13) | 5415 (15) |  < 0.001 | 3587 (13) | 4259 (16) |  < 0.001 |
 Low-dose methylprednisolone, n (%) | 5359 (18) | 6582 (18) | 0.042 | 4756 (18) | 4805 (18) | 0.580 |
 Antibioticsa, n (%) | 28,153 (92) | 32,354 (89) |  < 0.001 | 24,414 (92) | 24,079 (90) |  < 0.001 |
 Antifungal drugsb, n (%) | 1373 (4.5) | 1011 (2.8) |  < 0.001 | 1130 (4.2) | 843 (3.2) |  < 0.001 |
 BAL during hospitalization, n (%) | 726 (2.4) | 484 (1.3) |  < 0.001 | 604 (2.3) | 404 (1.5) |  < 0.001 |
 Early ENc, n (%) | 8758 (29) | 5092 (14) |  < 0.001 | 7396 (28) | 4271 (16) |  < 0.001 |
 EN within 7 days, n (%) | 16,361 (54) | 10,178 (28) |  < 0.001 | 13,824 (52) | 8518 (32) |  < 0.001 |
 PN within 7 days, n (%) | 5226 (17) | 6440 (18) | 0.028 | 4374 (16) | 5211 (20) |  < 0.001 |
 Early rehabilitationd, n (%) | 10,289 (34) | 10,860 (30) |  < 0.001 | 9021 (34) | 7749 (29) |  < 0.001 |
 ECMO during hospitalization, n (%) | 503 (1.6) | 101 (0.3) |  < 0.001 | 369 (1.4) | 96 (0.4) |  < 0.001 |
 RRT during hospitalization, n (%) | 4563 (15) | 2445 (6.7) |  < 0.001 | 3634 (14) | 2144 (8.0) |  < 0.001 |
Tracheostomy, n (%) | 7753 (25) | 7445 (21) |  < 0.001 | 6700 (25) | 5665 (21) |  < 0.001 |
 Timing of tracheostomy, day | 11 (8.0–6) | 14 (9.0–19) |  < 0.001 | 11 (8.0–16) | 13 (9.0–19) |  < 0.001 |
Critical care units use, n (%) | 22,627 (74) | 10,881 (30) |  < 0.001 | 19,241 (72) | 9157 (34) |  < 0.001 |
 Intensive care unit use | 17,513 (57) | 7826 (22) |  < 0.001 | 14,663 (55) | 6580 (25) |  < 0.001 |
 High-care unit use | 8844 (29) | 3487 (9.6) |  < 0.001 | 7676 (29) | 2954 (11) |  < 0.001 |