TABLE 2.
Independent predictors of 30-DAY mortality in the derivation sample and points assigned to the risk score
| Predictors | β-Coefficients (95% CI) |
Points Assigned |
|---|---|---|
| Demographic characteristics | ||
| Age, per yr | 0.03 (0.02–0.03) | Age, in yr |
| Male sex | 0.17 (0.02–0.32) | +10 |
| Comorbid illnesses | ||
| Cancer | 0.87 (0.71–1.03) | +30 |
| Heart failure | 0.31 (0.14–0.49) | +10 |
| Chronic lung disease | 0.30 (0.12–0.47) | +10 |
| Clinical findings | ||
| Pulse ⩾ 110/min | 0.60 (0.44–0.76) | +20 |
| Systolic blood pressure < 100 mm Hg | 0.86 (0.67–1.04) | +30 |
| Respiratory rate ⩾ 30/min | 0.41 (0.23–0.58) | +20 |
| Temperature < 36°C | 0.42 (0.25–0.59) | +20 |
| Altered mental status* | 1.50 (1.30–1.69) | +60 |
| Arterial oxygen saturation < 90%† | 0.58 (0.37–0.79) | +20 |
Definition of abbreviation: CI = confidence interval.
A total point score for a given patient is obtained by summing the patient's age in years and the points for each applicable characteristic. Points assignments correspond with the following risk classes: ⩽ 65 class I, very low risk; 66–85 class II, low risk; 86–105 class III, intermediate risk; 106–125 class IV, high risk; > 125 class V, very high risk.
*
Defined as disorientation, lethargy, stupor, or coma.
†
With and without the administration of supplemental oxygen.