Table 1 Characteristics of patients at baseline
Characteristic | Observation group (n = 51) | Control group (n = 54) | p value |
|---|---|---|---|
Age (years) | 68.0 (56.0, 78.0) | 70.0 (60.0, 79.0) | 0.445 |
Male sex—no. (%) | 34 (66.7) | 36 (66.7) | > 0.999 |
Height (cm) | 170.0 (160.0, 175.0) | 170.0 (161.8, 175.0) | 0.591 |
Weight (kg) | 68.0 (60.0, 75.0) | 69.0 (60.0, 73.5) | 0.648 |
BMI | 23.7 (22.0, 25.5) | 24.2 (21.4, 25.9) | 0.977 |
APACHE II | 21.0 (18.0, 23.0) | 20.0 (17.0, 23.3) | 0.985 |
Indication for intubation—no. (%) | |||
Respiratory failure | 19 (37.3) | 28 (51.9) | 0.475 |
Altered mental status | 13 (25.5) | 10 (18.5) | |
Airway obstruction | 2 (3.9) | 2 (3.7) | |
Haemodynamic instability | 17 (33.3) | 14 (25.9) | |