Table 3. Cox proportional hazards models of risk factors for readmission for acute exacerbation of COPD.
| Model | p | OR | 95% CI |
|---|---|---|---|
| Variable | |||
| 1 | |||
| Serum hsCRP level at discharge (continuous) | 0.000 | 1.173 | 1.084-1.269 |
| GOLD category D vs. GOLD categories A-C | 0.001 | 2.330 | 1.413-3.843 |
| 2 | |||
| Serum hsCRP level at discharge (≥ 3 mg/L vs. < 3 mg/L) | 0.000 | 3.486 | 1.968-6.175 |
| GOLD category D vs. GOLD categories A-C | 0.002 | 2.201 | 1.342-3.610 |
hsCRP: high-sensitivity C-reactive protein; and GOLD: Global Initiative for Chronic Obstructive Lung Disease.