Table 5.
Univariate logistic regression analysis and backward stepwise logistic regression model for prediction of the severity of pulmonary edema
| Variable | Odds ratio (95% CI) | P-value |
|---|---|---|
| Univariate logistic regressiona) | ||
| Shockable initial rhythm | 0.50 (0.23–1.08) | 0.078 |
| Total duration of CPR (/min) | 1.05 (1.02–1.08) | 0.002 |
| Albumin (/g/dL) | 0.51 (0.28–0.93) | 0.027 |
| Creatinine (/mg/dL) | 1.52 (0.99–2.32) | 0.054 |
| pO2 (/mmHg) | 1.00 (0.99–1.00) | 0.028 |
| pCO2 (/mmHg) | 1.03 (1.01–1.04) | 0.006 |
| Backward stepwise logistic regression modelb) | ||
| pCO2 (/mmHg) | 1.02 (1.00–1.04) | 0.038 |
| Total duration of CPR (/min) | 1.04 (1.01–1.07) | 0.016 |
CI, confidence interval; CPR, cardiopulmonary resuscitation.
a)
Variables significantly correlated with pulmonary edema severity (Table 4).
b)
101 patients (94.4%) were included in the model. P-value for goodness of fit (chi-squared) and the area under the receiver operator characteristic curve were 0.430 and 0.72, respectively.