Table 3.
Odds ratios of circumstantial factors for unplanned extubation
| Circumstantial factors | Unplanned extubation (%) |
Planned extubation (%) |
Odds ratio (95% confidence interval) | ||
|---|---|---|---|---|---|
| Crude | Adjusted (full model)* | Adjusted (stepwise)† | |||
| Timing | |||||
| AM | 41.7 | 63.1 | - | - | - |
| PM | 33.3 | 35.4 | 1.42 (0.571 - 3.56) | 2.76 (0.449 - 17.0) | 2.31 (0.73 - 7.32) |
| Night | 25.0 | 1.5 | 24.6‡ (2.87 - 211) | 86.3‡ (2.44 - 3,050) | 37.0‡ (3.10 - 442) |
| Use of restraints | 41.7 | 29.9 | 0.518 (0.722 - 3.90) | 8.439‡ (1.40 - 51.0) | 2.88 (0.939 - 8.84) |
| Use of sedation | 5.6 | 26.9 | 0.160 (0.035 - 0.736) | 0.053‡ (0.004 - 0.777) | 0.284 (0.052 - 1.56) |
| Tape for fixation | 11.1 | 3.0 | 1.40 (0.706 - 23.4) | Omitted (predicts success perfectly) | Not included |
| X-ray confirmation | 91.7 | 85.1 | 0.657 (0.496 - 7.52) | 1.00 (0.050 - 20.0) | Not included |
AM - ante meridiem; PM - post meridiem.
*
Models included baseline risk factors
†
Final model included age, sex, surgical and other reasons for intubation, mechanical ventilation mode, admission in nonsurgical wards.
‡
p-value <0.05.