Table 1. Baseline characteristics of 6,889 patients who underwent tracheal intubation in the emergency department, according to body mass index category.
| Variables | Body mass index (kg/m2) category | P value | ||
|---|---|---|---|---|
| <25.0 (Lean) n = 5,370 |
25.0–29.9 (Overweight) n = 1,177 |
≥30.0 (Obesity) n = 342 |
||
| Age, year, median (IQR) | 73 (60–82) | 66 (53–76) | 60 (45–80) | <0.001 |
| Male | 3,322 (61) | 784 (66) | 171 (50) | <0.001 |
| Primary indication | <0.001 | |||
| Medical arrest | 2,045 (38) | 377 (32) | 100 (29) | |
| Traumatic arrest | 219 (4) | 45 (4) | 68 (2) | |
| Medical indication | 2,475 (46) | 606 (51) | 209 (61) | |
| Traumatic indication | 631 (11) | 149 (12) | 25 (7) | |
| Methods | <0.001 | |||
| No medication | 3,096 (57) | 573 (48) | 161 (47) | |
| Rapid sequence intubation | 1,530 (28) | 388 (32) | 114 (33) | |
| Sedative only | 539 (10) | 149 (12) | 51 (14) | |
| Others* | 205 (3) | 67 (4) | 16 (4) | |
| Devices | <0.001 | |||
| Direct laryngoscope | 3,889 (72) | 833 (70) | 223 (65) | |
| Video laryngoscope | 1,369 (25) | 307 (26) | 100 (29) | |
| Others† | 112 (2) | 37 (3) | 19 (5) | |
| Training level and specialty of intubator | 0.46 | |||
| Emergency physician | 983 (18) | 246 (20) | 66 (19) | |
| Emergency medicine resident | 1,535 (28) | 338 (28) | 97 (28) | |
| Transitional year resident‡ | 2,383 (44) | 495 (42) | 145 (42) | |
| Others§ | 469 (8) | 98 (8) | 34 (9) | |
Abbreviation: IQR, interquartile range. Data were presented as number (percentage) of patients unless otherwise indicated.
*Others include intubations using paralytics or analgesics only
†Others include intubation using a bougie or fiberoptic scope
‡Defined as post-graduate years 1 and 2
§Others include intbuations by surgeon and anesthesiologist