Table 3.
Multivariate logistic regression of factors presumed associated with weaning.*
| Variable | Threshold | OR | 95.0% CI for OR | p-value | |
| Values | Lower | Upper | |||
| Year | =2004 | 7.21 | 3.79 | 13.74 | < 0.001 |
| Gender | =Man | 0.88 | 0.59 | 1.32 | 0.544 |
| Age | > 63 | 0.83 | 0.48 | 1.41 | 0.489 |
| NEMS | > 34 | 0.95 | 0.91 | 0.99 | 0.012 |
| SAPS | 0.99 | 0.97 | 1.01 | 0.444 | |
| Peep (cmH2O) | > 5 | 0.63 | 0.42 | 0.93 | 0.020 |
| Tracheostomy | =Yes | 0.63 | 0.41 | 0.98 | 0.042 |
| Prescribed by phys. | =Yes | 2.60 | 1.78 | 3.80 | < 0.001 |
| Propofol | =Yes | 1.35 | 0.84 | 2.19 | 0.218 |
| TVKG (ml/kg) | > 7 | 1.17 | 0.79 | 1.73 | 0.444 |
| FiO2 | > 0.3 | 0.71 | 0.46 | 1.10 | 0.127 |
| Heartrate | < 100 | 0.76 | 0.48 | 1.19 | 0.231 |
| Systolic BP (mmHg) | < 150 | 0.92 | 0.57 | 1.48 | 0.723 |
| Neuro_intensiv | =Yes | 2.31 | 1.09 | 4.90 | 0.028 |
| Night verus day/evening | =Night | 0.37 | 0.24 | 0.56 | < 0.001 |
| Constant | 25.33 | < 0.001 | |||
*OR odds ratio, CI confidence interval.