Table 1 –
Demographic information of all patients stratified by total burn size area (TBSA).
| Demographics | All patients (N=983) | TBSA<20% (N=752) | TBSA≥20% (N=231) | P-value* |
|---|---|---|---|---|
| Age years, mean (SD) | 48 (18) | 47 (18) | 49 (17) | 0.250 |
| Gender female, n (%) | 297 (30) | 240 (32) | 57 (25) | 0.036* |
| Total TBSA %, mean (SD) | 14 (14) | 8 (5) | 35 (14) | <0.001* |
| 3rd degree TBSA %, median (IQR) | 49 (0–100) | 40 (0–100) | 70 (13–96) | 0.005* |
| Inhalation injury, n (%) | 137 (14) | 54 (7) | 83 (36) | <0.001* |
| Burn mechanism | ||||
| Flame, n (%) | 645 (66) | 450 (60) | 195 (84) | <0.001* |
| Scald, n (%) | 275 (28) | 242 (32) | 33 (14) | <0.001* |
| Electrical, n (%) | 58 (6) | 48 (6) | 10 (4) | 0.245 |
| Chemical, n (%) | 16 (2) | 14 (2) | 2 (1) | 0.295 |
| Contact, n (%) | 40 (4) | 38 (5) | 2 (1) | 0.005* |
| Clinical markers | ||||
| Escharotomy, n (%) | 176 (18) | 65 (9) | 111 (48) | <0.001* |
| Length of stay (days), median (IQR) | 17 (12–26) | 15 (11–20) | 32 (19–63) | <0.001* |
| LOS/TBSA (days/%), median (IQR) | 1.9 (1.2–3.3) | 2.2 (1.5–3.9) | 1.1 (0.7–1.7) | <0.001* |
| Number of OR, median (IQR) | 1 (1–2) | 1 (1–2) | 3 (2–5) | <0.001* |
| Number of single stage, n (%) | 541 (55) | 496 (66) | 45 (19) | <0.001* |
| Number of two-stage, n (%) | 256 (26) | 204 (27) | 52 (23) | 0.159 |
| Number of multiple stages, n (%) | 186 (19) | 52 (7) | 134 (58) | <0.001* |
| Co-morbidities | ||||
| # of co-morbidities, median (IQR) | 2 (1–3) | 2 (1–3) | 2 (0–3) | 0.988 |
| Smoking history, n (%) | 440 (45) | 329 (44) | 111 (48) | 0.250 |
| Drug use, n (%) | 150 (15) | 111 (15) | 39 (17) | 0.433 |
| Alcohol use, n (%) | 426 (43) | 334 (45) | 92 (40) | 0.213 |
| Post-operative complications | ||||
| Pulmonary embolism, n (%) | 10 (1) | 5 (1) | 5 (2) | 0.047* |
| Deep venous thrombosis, n (%) | 13 (1) | 8 (1) | 5 (2) | 0.200 |
| ARDS, n (%) | 49 (5) | 15 (2) | 34 (15) | <0.001* |
| Pneumonia/VAP, n (%) | 181 (18) | 55 (7) | 126 (55) | <0.001* |
| Graft loss, n (%) | 200 (20) | 110 (15) | 90 (39) | <0.001* |
| Sepsis, n (%) | 104 (11) | 19 (3) | 85 (37) | <0.001* |
| Wound infection, n (%) | 180 (18) | 92 (12) | 88 (38) | <0.001* |
| MODS, n (%) | 48 (5) | 16 (2) | 32 (14) | <0.001* |
| Urinary tract infection, n (%) | 156 (16) | 75 (10) | 81 (35) | <0.001* |
| Mortality, n (%) | 42 (4) | 11 (2) | 31 (13) | <0.001* |
*
Significance at 5% level.