Table 1 Patients’ characteristics according to severe burn patient volume (multiple imputed cohort)
Variables | Annual severe burn patients ≤ 5 | Annual severe burn patients > 5 |
|---|---|---|
Number of hospitals, n | 697 | 40 |
Number of patients, n | 3648 | 1602 |
Transferred from another hospital, n (%) | 999 (27.4) | 539 (33.6) |
Year of injury | ||
 2010–2012 | 1722 (47.2) | 756 (47.2) |
 2013–2015 | 1926 (52.8) | 846 (52.8) |
Age, years, median [IQR] | 67 [44, 80] | 64 [43, 79] |
Female sex, n (%) | 1514 (41.5) | 625 (39.0) |
Charlson comorbidity index, median [IQR] | 0 [0, 1] | 0 [0, 0] |
Levels of consciousness, alert, n (%) | 2459 (67.4) | 913 (57.0) |
Burn index, median [IQR] | 15 [10.5, 24.7] | 20 [12.5, 35] |
Prognostic burn index, median [IQR] | 86 [64, 99.5] | 90 [68, 106] |
Inhalation injury, n (%) | 560 (15.4) | 331 (20.7) |
Interventions performed within 2 days of admission | ||
 Intensive care unit, n (%) | 2033 (55.7) | 1367 (85.3) |
 Mechanical ventilation, n (%) | 1011 (27.7) | 752 (46.9) |
 Escharotomy, n (%) | 241 (6.6) | 241 (15.0) |
 Vasopressor, n (%) | 532 (14.6) | 342 (21.3) |
 Haptoglobin, n (%) | 267 (7.3) | 277 (17.3) |
 RBC transfusion, n (%) | 202 (5.5) | 130 (8.1) |
Skin transplant during hospitalization, n (%) | 1583 (43.4) | 909 (56.7) |
 Artificial graft use, n (%) | 314 (8.6) | 292 (18.2) |
 Cultured graft use, n (%) | 108 (3.0) | 136 (8.5) |
Hospital characteristics | ||
 A government-approved advanced hospital, n (%) | 848 (23.2) | 732 (45.7) |
 Number of ICU bed, median [IQR] | 3.7 [0, 6.4] | 4.9 [3.5, 9.5] |
 Proportion of transferred patients of a treating hospital, median [IQR] | 24.0 [10.5, 39.3] | 32.1 [17.2, 46.9] |