Table 3.
Summary of multivariable adjusted logistic regression analysis for hospital death among critically ill patients after ICU discharge
| Predictor variables | Odds ratio (OR) | 95 % CI | P-value |
|---|---|---|---|
| Discharge time | |||
| Daytime | 1.0 | (reference) | |
| Nighttime | 1.29 | 1.14–1.46 | <0.001 |
| Discharge day | |||
| Weekday | 1.0 | (reference) | |
| Weekend | 0.95 | 0.84–1.07 | 0.39 |
| APACHE II score | 1.06 | 1.05–1.07 | <0.001 |
| Age (per year) | 1.04 | 1.04–1.04 | <0.001 |
| Burden of comorbidities | |||
| None | 1.0 | (reference) | |
| Just one | 1.40 | 1.24–1.58 | <0.001 |
| Two or more | 1.47 | 1.13–1.91 | 0.004 |
| Mechanical ventilation | 1.19 | 1.03–1.37 | 0.018 |
| Admission source | |||
| Operating room | 1.0 | (reference) | |
| ED | 1.77 | 1.50–2.08 | <0.001 |
| Other hospital | 1.02 | 0.83–1.26 | 0.82 |
| Ward | 2.58 | 2.18–3.04 | <0.001 |
| Study year | |||
| 2002/2003 | 1.0 | (reference) | |
| 2004/2005 | 1.09 | 0.93–1.28 | 0.28 |
| 2006/2007 | 1.27 | 1.08–1.48 | 0.003 |
| 2008/2009 | 1.17 | 1.00–1.37 | 0.048 |
| Hospital type | |||
| Community | 1.0 | (reference) | |
| Tertiary | 1.07 | 0.95–1.20 | 0.28 |
| ICU stay (log) | 1.28 | 1.20–1.37 | <0.001 |
| Admission diagnosis | |||
| Respiratory | 1.0 | (reference) | |
| Gastrointestinal | 1.88 | 1.59–2.21 | <0.001 |
| Cardiovascular | 1.32 | 1.11–1.57 | 0.002 |
| Sepsis | 1.18 | 0.98–1.42 | 0.08 |
| Trauma | 0.85 | 0.63–1.15 | 0.29 |
| Endo/metabolic | 0.54 | 0.39–0.76 | <0.001 |
| Neurologic | 2.20 | 1.80–2.68 | <0.001 |
| Renal | 1.11 | 0.83–1.48 | 049 |
| Other | 1.77 | 1.27–2.47 | 0.001 |
Abbreviations: OR odds ratio, ED emergency department, LOS, length of stay
AuROC: 0.787 (0.777–0.797)
GoF test: 0.9904