Table 3. Risk Factors for Continued Hospitalization or Death at 30 Days After Admission to ICU. Odds Ratio (OR) and 95% Confidence Intervals (CI) Estimated by Logistic Regression Models.
| Comparison | Univariate OR (95% CI) | P value | Adjusted OR (95% CI) | P value | |
|---|---|---|---|---|---|
| Baseline Variables | |||||
| Age | 10-year increments | 1.1 (0.9-1.3) | 0.52 | -- | -- |
| Unit | Other | 1.0 (ref) | 1.0 | ||
| BICU | 48.4 (6.2-381.1) | <0.001 | 66.0 (7.1-613.9)a | <0.001 | |
| Race | Caucasian | 1.0 | |||
| Other | .4 (0.1-1.1) | 0.08 | -- | -- | |
| Sex | Female | 1.0 | |||
| Male | 1.0 (0.5-2.2) | 0.95 | -- | -- | |
| APACHE II score quartile | <16 | 1.0 | |||
| ≥16, <21 | .9 (0.3-3.5) | 0.94 | -- | -- | |
| ≥21, <27.5 | 1.0 (0.3-3.8) | 0.99 | -- | -- | |
| ≥ 27.5 | 1.5 (0.4-5.4) | 0.54 | -- | -- | |
| Transfusion | No | 1.0 | |||
| Yes | 2.5 (0.4-15.7) | 0.32 | -- | -- | |
| Mechanical Ventilation | No | 1.0 | 1.0 | ||
| Yes | 4.8 (1.5-15.0) | 0.007 | 7.5 (1.5-36.2)b | 0.01 | |
| Hospital Stay Variables | |||||
| Major infection | No | 1.0 | 1.0 | ||
| Yes | 2.4 (1.0-5.4) | 0.04 | 2.1 (0.8-5.6)c | 0.14 | |
| Proportion of transfusion days | 10% increments | 1.2 (0.8-1.7) | 0.43 | -- | -- |
| Proportion of ventilator days | 10% increments | 1.3 (1.0-1.7) | 0.02 | 1.6 (1.1-2.2) c | 0.01 |
| HHV-6 viremia at any level | No | 1.0 | 1.0 | ||
| Yes | 5.0 (1.9-12.9) | 0.001 | 3.5 (1.2-10.3) c | 0.03 | |
| CMV viremia at any level | No | 1.0 | 1.0 | ||
| Yes | 3.7 (1.6-8.5) | 0.002 | 3.4 (1.3-8.9) c | 0.01 | |
a
Adjusted for mechanical ventilation at baseline
b
Adjusted for ICU type
c
Adjusted for baseline variables of mechanical ventilation and ICU type