Table 3.
Association Between BUN Levels and LOS
| Crude Model | Model I | Model II | |
|---|---|---|---|
| β (95% CI) P-value | β (95% CI) P-value | β (95% CI) P-value | |
| Bun | 0.1 (0.1, 0.2) <0.001 | 0.1 (0.1, 0.2) <0.001 | 0.1 (0.0, 0.2) 0.011 |
| Bun quartile | |||
| Q1 | Ref | Ref | Ref |
| Q2 | 0.7 (−1.9, 3.4) 0.585 | 0.5 (−2.1, 3.2) 0.702 | 0.3 (−2.3, 3.0) 0.793 |
| Q3 | 2.4 (−0.1, 4.9) 0.062 | 2.1 (−0.5, 4.6) 0.111 | 1.6 (−0.9, 4.1) 0.213 |
| Q4 | 5.7 (3.2, 8.3) <0.001 | 5.3 (2.6, 8.0) <0.001 | 4.6 (1.9, 7.3) <0.001 |
| p for trend | 1.9 (1.1, 2.7) <0.001 | 1.8 (0.9, 2.6) <0.001 | 1.5 (0.6, 2.3) <0.001 |
Notes: Crude model adjust for: None. Model I adjust for: age; gender. Model II adjust for: age; gender; steroid; full assisting in daily activities; wheezing lung sound; rr; AMS; hr; fever; stability; discharge; intubation.