Table 4.
Multivariate logistic regression model for development of SBT failure
| Variables | Odds ratio (95% CI) | P value |
|---|---|---|
| Age ≧65 years |
1.1 (0.3-3.6) |
0.917 |
| Female sex |
3.0 (1.0-9.4) |
0.054 |
| Use of β2 agonist |
4.0 (0.9-18.3) |
0.075 |
| Use of anticholinergic |
2.9 (0.6-13.0) |
0.163 |
| Use of CCB |
2.3 (0.7-6.8) |
0.149 |
| Δln TP ≤0.4 ln(ms2) | 7.2 (2.0-25.4) | 0.002 |
CCB, calcium channel blocker; CI, confidence interval; Δln TP, change of natural logarithmic transformation of total power from pre-SBT to SBT periods; SBT, spontaneous-breathing trial.