Table 2. Multivariate logistic regression model using the results of the univariate comparison with p-value < 0.1 of 258 patients with carbon monoxide poisoning.
| Odds Ratio (95% Confidence Interval) | |||
|---|---|---|---|
| Variable | Full Model | Final Model | p-value |
| Age | 1.0 (0.9–1.0) | NA | |
| Respiratory rate | 1.0 (0.9–1.2) | NA | |
| Occupational exposure | 0.8 (0.3–2.5) | NA | |
| Altered mental status | 0.74 (0.4–1.6) | NA | |
| Lack of pupil reflex | 3.2 (1.0–10.3) | 3.1 (1.0–9.2) | 0.043 |
| Loss of consciousness | 2.1 (1.0–4.1) | 2.3 (1.2–4.4) | 0.008 |
| Headache | 0.8 (0.3–1.9) | NA | |
| Dizziness | 0.6 (0.3–1.3) | NA | |
| Positive Babinski’s reflex | 1.2 (0.5–2.9) | NA | |
| Urinary incontinence | 1.0 (0.5–2.2) | NA | |
NA: not available; variable not included in the final model.