Table 4.
Multivariate analysis
| Variables | Odds ratio | 95% confidence interval (CI) | P |
|---|---|---|---|
| Age, ≥65 years | 1.664 | 0.919–3.014 | 0.093 |
| ICU length of stay | 1.067 | 1.035–1.099 | <0.001 |
| Mechanical ventilation | 5.123 | 2.501–10.494 | <0.001 |
| Gastric tube | 1.935 | 1.012–3.698 | 0.046 |
| APACHE II score (≥20)* | 1.897 | 1.045–3.441 | 0.035 |
| Sedative medications | 0.093 | ||
| Use of vasoactive drugs | 0.890 | ||
| Artificial airway | |||
| Not use | |||
| Tracheal intubation | 0.248 | ||
| Tracheotomy | 0.248 | ||
| Deep intravenous catheter | 0.567 | ||
| Arterial line | 0.801 | ||
| Urinary catheter | 0.355 | ||
| Diabetes | 0.419 | ||
| Impaired renal function | 0.170 |
Notes: *APACHE II score was calculated as categorical variable including: APACHE II score<20 and APACHE II score ≥20. The analyses were adjusted for age and ICU length of stay.
Abbreviation: APACHE II, Acute Physiology and Chronic Health Evaluation II.