Table 2. The predictive factors for weaning failure in patients requiring PMV.
| Variables | Univariate analysis | Multivariate analysis | |||||
|---|---|---|---|---|---|---|---|
| OR | 95% CI | P value | OR | 95% CI | P value | ||
| Age | 1.04 | 1.01–1.08 | 0.016 | – | – | – | |
| Respiratory cause | 4.22 | 1.91–9.33 | 0.000 | 3.98 | 1.29–12.30 | 0.016 | |
| APACHE III score on day 21 of MV | 1.02 | 1.00–1.03 | 0.028 | – | – | – | |
| SOFA score on day 21 of MV | 1.50 | 1.21–1.85 | 0.000 | 1.47 | 1.17–1.85 | 0.001 | |
PMV, prolonged mechanical ventilation; OR, odds ratio; CI, confidence interval; APACHE, acute physiology and chronic health evaluation; MV, mechanical ventilation; SOFA, sequential organ failure assessment.