Table 1 Basic demographic characteristics and clinical outcomes of the 199 HFEPs according to the event timeline
Variable | Total (n = 199) | Acute phase (n = 8) | Subacute phase (n = 167) | Chronic phase (n = 24) | P-value |
|---|---|---|---|---|---|
Age (years) | 41.6 ± 14.4 | 36.63 ± 11.06 | 41.52 ± 14.22 | 44.08 ± 16.54 | *0.3625 |
Sex | †0.1983 | ||||
Male | 132 (66.3%) | 7 (87.50%) | 112 (67.07%) | 13 (54.17%) | |
Female | 67 (33.7%) | 1 (12.50%) | 55 (32.93%) | 11 (45.83%) | |
Injury mechanism | ‡ < 0.0001 | ||||
Inhalation | 195 (97.99%) | 5 (62.50%) | 167 (100%) | 23 (95.83%) | |
Complex (more than two) | 4 (2.01%) | 3 (37.50%) | 0 (0%) | 1 (4.17%) | |
Occupation | ‡0.0021 | ||||
Worker | 48 (24.12%) | 5 (62.50%) | 39 (23.35%) | 4 (16.67%) | |
Resident | 14 (7.04%) | 0 (0%) | 10 (5.99%) | 4 (16.67%) | |
Firefighter | 17 (8.54%) | 0 (0%) | 17 (10.08%) | 0 (0%) | |
EMS technician | 3 (1.51%) | 0 (0%) | 3 (1.80%) | 0 (0%) | |
Police | 5 (2.51%) | 0 (0%) | 5 (2.99%) | 0 (0%) | |
Reporter | 2 (1.01%) | 2 (25.00%) | 0 (0%) | 0 (0%) | |
Unknown | 110 (55.28%) | 1 (12.50%) | 93 (55.69%) | 16 (66.67%) | |
Distance between patient location and incident location | ‡0.0062 | ||||
> 100 m | 96 (48.24%) | 0 (0%) | 81 (48.50%) | 15 (62.50%) | |
≤ 100 m | 103 (51.76%) | 8 (100%) | 86 (51.50%) | 9 (37.50%) | |
Injury severity | ‡0.0001 | ||||
MBG | 55 (27.6%) | 8 (100%) | 45 (26.95%) | 2 (8.33%) | |
NMBG | 144 (72.4%) | 0 (0%) | 122 (73.05%) | 22 (91.67%) | |
Diagnosis | ‡0.0012 | ||||
Chemical intoxication | 190 (95.48%) | 5 (62.50%) | 163 (97.60%) | 22 (91.67%) | |
Complex (more than two) | 9 (4.52%) | 3 (37.50%) | 4 (2.40%) | 2 (8.33%) | |
Extent of damage | ‡ < 0.0001 | ||||
Single site | 192 (97.0%) | 5 (62.50%) | 167 (100%) | 20 (83.33%) | |
Multiple sites | 7 (3.0%) | 3 (37.50%) | 0 (0%) | 4 (16.67%) | |
Damaged site | ‡0.0001 | ||||
Respiratory tract | 188 (94.47%) | 5 (62.50%) | 163 (97.60%) | 20 (83.33%) | |
Complex (more than two) | 11 (5.53%) | 3 (37.50%) | 4 (2.40%) | 4 (16.67%) | |
ED disposition | ‡ < 0.0001 | ||||
Discharge | 191 (96.0%) | 1 (12.50%) | 167 (100%) | 23 (95.83%) | |
DAMA | 5 (2.5%) | 5 (62.50%) | 0 (0%) | 0 (0%) | |
Death | 2 (1.01%) | 2 (25%) | 0 (0%) | 0 (0%) | |
ADM | 1 (0.5%) | 0 (0%) | 0 (0%) | 1 (4.17%) |