Table 1. Univariate analysis of variables of 258 patients with carbon monoxide poisoning.
| 30-Day Neurological Sequelae | ||||
|---|---|---|---|---|
| Without | With | All | ||
| Variable | (n = 119) | (n = 139) | (n = 258) | p-value |
| Age (years)* | 51 ± 22 | 58 ± 22 | 55 ± 22 | 0.013 |
| > 35 (%) | 76.5 | 82.0 | 79.5 | 0.272 |
| ≥ 65 (%) | 29.4 | 37.4 | 33.7 | 0.176 |
| Gender: Male (%) | 44.8 | 50.8 | 48.0 | 0.351 |
| Systolic blood pressure (mmHg)* | 129.4 ± 19.0 | 130.3 ± 24.6 | 129.9 ± 22.1 | 0.743 |
| Heart Rate (1/min)* | 87.2 ± 16.5 | 87.2 ± 17.3 | 87.2 ± 16.9 | 0.974 |
| Respiratory rate (1/min)* | 19.9 ± 1.9 | 20.6 ± 2.7 | 20.3 ± 2.4 | 0.018 |
| Body temperature (°C)* | 36.6 ± 0.6 | 36.6 ± 0.6 | 36.6 ± 0.6 | 0.359 |
| Occupational exposure (%) | 9.2 | 16.5 | 13.2 | 0.084 |
| Current smoker (%) | 12.6 | 12.9 | 12.8 | 1.000 |
| Hypertension (%) | 18.5 | 20.9 | 19.8 | 0.633 |
| Diabetes (%) | 6.7 | 2.1 | 4.3 | 0.119 |
| Altered mental status (%) | 29.4 | 40.3 | 35.3 | 0.068 |
| Lack of pupil reflex (%) | 4.2 | 15.1 | 10.1 | 0.004 |
| Loss of consciousness (%) | 49.6 | 73.4 | 62.4 | < 0.001 |
| Headache (%) | 49.6 | 33.1 | 40.7 | 0.008 |
| Dizziness (%) | 66.4 | 47.5 | 56.2 | 0.002 |
| Nausea/vomiting (%) | 32.8 | 41.0 | 37.2 | 0.197 |
| Positive Babinski’s reflex (%) | 8.4 | 18.0 | 13.6 | 0.025 |
| Urinary incontinence (%) | 19.3 | 28.8 | 24.4 | 0.078 |
| Hyperbaric oxygen therapy (%) | 68.6 | 87.5 | 78.7 | < 0.001 |
*mean ± standard deviation (SD).