Univariate regression | Multi-variable regression | |||||
---|---|---|---|---|---|---|
Predictor variables | OR | 95% CI | P value | OR | 95% CI | P value |
Admission time | ||||||
Non-round time | 1.0 | 1.0 | ||||
Round time | 1.21 | 1.09-1.35 | < 0.001 | 1.02 | 0.90-1.16 | 0.700 |
APACHE II score | 1.14 | 1.13-1.14 | < 0.001 | 1.12 | 1.11-1.12 | < 0.001 |
Age (per year) | 1.03 | 1.03-1.03 | < 0.001 | 1.02 | 1.02-1.02 | < 0.001 |
Burden of comorbidities | ||||||
No comorbidity | 1.0 | 1.0 | ||||
One comorbidity | 2.00 | 1.85-2.17 | < 0.001 | 1.17 | 1.07-1.29 | 0.001 |
Two or more comorbidities | 2.48 | 2.08-2.96 | < 0.001 | 1.31 | 1.07-1.60 | 0.008 |
Mechanical ventilation | ||||||
No | 1.0 | 1.0 | ||||
Yes | 2.11 | 1.90-2.34 | < 0.001 | 1.42 | 1.26-1.61 | < 0.001 |
Source of admission | ||||||
Operating room - Elective | 1.0 | 1.0 | ||||
Operating room - Emergency | 2.37 | 1.98-2.83 | < 0.001 | 1.81 | 1.49-2.20 | < 0.001 |
Emergency department | 3.23 | 2.75-3.82 | < 0.001 | 2.92 | 2.42-3.52 | < 0.001 |
Other hospital | 2.64 | 2.21-3.16 | < 0.001 | 2.05 | 1.68-2.51 | < 0.001 |
Ward | 5.59 | 4.72-6.61 | < 0.001 | 3.72 | 3.07-4.50 | < 0.001 |
Study year | ||||||
2002/2003 | 1.0 | 1.0 | ||||
2004/2005 | 1.04 | 0.94-1.16 | 0.450 | 0.98 | 0.87-1.11 | 0.778 |
2006/2007 | 1.02 | 0.92-1.14 | 0.635 | 1.03 | 0.91-1.16 | 0.641 |
2008/2009 | 1.07 | 0.96-1.19 | 0.211 | 1.04 | 0.92-1.17 | 0.514 |
Study site | ||||||
Community hospitals | 1.0 | 1.0 | ||||
Tertiary hospitals | 1.00 | 0.92-1.08 | 0.966 | 1.05 | 0.96-1.15 | 0.298 |
Admission diagnosis | ||||||
Respiratory | 1.0 | 1.0 | ||||
Gastrointestinal | 1.27 | 1.14-1.40 | < 0.001 | 1.70 | 1.49-1.93 | < 0.001 |
Cardiovascular | 1.35 | 1.21-1.51 | < 0.001 | 1.66 | 1.46-1.89 | < 0.001 |
Sepsis | 1.54 | 1.37-1.74 | < 0.001 | 1.02 | 0.89-1.18 | 0.728 |
Trauma | 0.35 | 0.29-0.42 | < 0.001 | 0.87 | 0.71-1.07 | 0.199 |
Metabolic | 0.29 | 0.23-0.36 | < 0.001 | 0.38 | 0.30-0.48 | < 0.001 |
Neurologic | 1.15 | 0.99-1.33 | 0.053 | 1.72 | 1.46-2.02 | < 0.001 |
Renal | 0.89 | 0.71-1.11 | 0.294 | 0.71 | 0.55-0.91 | 0.007 |
Other | 0.81 | 0.64-1.03 | 0.093 | 1.51 | 1.13-2.00 | 0.005 |