TABLE 3.
Logistic Regression
| Model 1 | Model 2 | |||||
|---|---|---|---|---|---|---|
| Variables | OR | 95% CI | p | OR | 95% CI | p |
| Surprise question | 1.06 | 1.05–1.07 | 0.00 | 0.19 | 0.16–0.24 | 0.00 |
| Age | 1.04 | 1.03–1.05 | 0.00 | |||
| Diabetes | 0.72 | 0.57–0.90 | 0.00 | 0.70 | 0.55–0.90 | 0.01 |
| Chronic renal insufficiency | 1.33 | 0.82–2.17 | 0.25 | 1.20 | 0.72–2.03 | 0.48 |
| Chronic dialysis | 4.26 | 1.59–11.39 | 0.00 | 4.66 | 1.66–13.09 | 0.00 |
| Confirmed infection | 0.77 | 0.63–0.94 | 0.01 | 0.72 | 0.58–0.89 | 0.00 |
| Cerebrovascular accident | 1.87 | 0.96–3.66 | 0.07 | 1.62 | 0.79–3.34 | 0.19 |
| Intracranial mass | 11.73 | 3.59–38.32 | 0.00 | 6.95 | 2.03–23.86 | 0.00 |
| Immunocompromised | 0.59 | 0.45–0.79 | 0.00 | 0.52 | 0.39–0.70 | 0.00 |
| Neoplasm | 3.58 | 2.55–5.03 | 0.00 | 2.15 | 1.49–3.09 | 0.00 |
| Cirrhosis | 6.22 | 2.93–13.18 | 0.00 | 3.48 | 1.59–7.63 | 0.00 |
| Hematologic malignancy | 4.01 | 2.18–7.37 | 0.00 | 3.02 | 1.59–7.63 | 0.00 |
| Cardiovascular insufficiency | 2.25 | 1.26–4.00 | 0.01 | 1.24 | 0.67–2.30 | 0.50 |
| Cardiopulmonary resuscitation | 3.62 | 2.15–6.10 | 0.00 | 2.67 | 1.53–4.64 | 0.00 |
| Respiratory insufficiency | 1.81 | 1.20–2.72 | 0.00 | 2.21 | 0.78–1.88 | 0.41 |
| Mechanical ventilation at start | 1.81 | 1.47–2.23 | 0.00 | 1.63 | 1.31–2.01 | 0.00 |
| Admission type | 2.60 | 1.69–4.02 | 0.00 | 1.82 | 1.16–2.85 | 0.01 |
| 1.32 | 0.84–2.08 | 0.28 | 1.15 | 0.72–1.84 | 0.55 | |
| Nagelkerke pseudo r2, % | 25.4 | 33.7 | ||||
OR = odds ratio.
Association of patient characteristics and 1 yr. Model 1: basic model (excluded variables through backward selection were “gender, chronic obstructive pulmonary disease, gastrointestinal bleeding, and acute ICU admission”). Model 2: Model 1 plus surprise question 3.