Table 1.
Demographics and clinical data of CO poisoning cases.
| Variable | Intentional (N = 249) | Unintentional (N = 373) | P-values |
|---|---|---|---|
| Male, n (%) | 146 (58.6%) | 159 (42.6%) | <0.05 |
| Age, mean (SD) years old | 36.4 (12.3) | 30.6 (18.4) | <0.05 |
| History of psychiatric diseases, n (%) | 106 (42.6%) | 6 (1.6%) | <0.05 |
| GCS <9, n (%) | 64 (25.7%) | 8 (2.1%) | <0.05 |
| Married status, n (%) | 72 (28.9%) | 154 (41.2%) | 0.002 |
| Season of the CO poisoning, n (%) | |||
| Spring (March–May) | 59 (23.7%) | 124 (33.2%) | <0.05 |
| Summer (June–August) | 62 (24.9%) | 12 (3.2%) | <0.05 |
| Fall (September–November) | 63 (25.3%) | 30 (8.0%) | <0.05 |
| Winter (December–February) | 65 (26.1%) | 207 (55.4%) | <0.05 |
| Transferred from outside institutions, n (%) | 133 (53.4%) | 217 (58.1%) | 0.241 |
| Source of CO poisoning, n (%) | |||
| Charcoal burning | 230 (92.3%) | 21 (5.6%) | <0.05 |
| Water heater incomplete combustion or incorrect use of furnace | 4 (1.6%) | 328 (87.9%) | <0.05 |
| Other* | 15 (6.0%) | 24 (6.4%) | 0.499 |
| Time of arrival at emergency room, n (%) | |||
| Day shift (08:01–16:00) | 73 (29.3%) | 73 (19.6%) | 0.004 |
| Evening shift (16:01–00:00) | 103 (41.3%) | 125 (33.5%) | 0.004 |
| Night shift (00:01–08:00) | 73 (29.3%) | 175 (46.9%) | 0.004 |
GCS, Glasgow Coma Scale.
*
Other sources including occupational accident, fire or automobile exhaust.