Table 1 Patient characteristics stratified by extubation outcomes
|  | Total cohort (n = 355) | Successful extubation (n = 317) | Reintubation (n = 38) | P value |
|---|---|---|---|---|
Age, years | 69 (55–76) | 69 (54–76) | 69.5 (63–76) | 0.674 |
Male sex, n (%) | 221 (62.3) | 195 (61.5) | 26 (68.4) | 0.481 |
Body mass index, kg/m2 | 22.7 (20.1–25.6) | 22.8 (20.1–25.9) | 22.2 (19.7–24.1) | 0.297 |
APACHE II score | 17 (13–22) | 17 (13–22) | 16 (13–20) | 0.407 |
Comorbidity, n (%) | Â | Â | Â | Â |
 Heart failure | 99 (27.9) | 88 (27.8) | 11 (28.9) | 0.850 |
 COPD | 27 (7.6) | 24 (7.6) | 3 (7.9) | 1.000 |
 Asthma | 16 (4.5) | 14 (4.4) | 2 (5.3) | 0.684 |
 Other respiratory diseases | 39 (11.0) | 31 (9.8) | 8 (21.1) | 0.051 |
 Diabetes mellitus | 96 (27.0) | 83 (26.2) | 13 (34.2) | 0.334 |
 Chronic kidney disease | 74 (20.8) | 64 (20.2) | 10 (26.3) | 0.399 |
 Malignancy | 36 (10.1) | 29 (9.1) | 7 (18.4) | 0.087 |
Systemic diagnosis for ICU admission, n (%) | Â | |||
 Cardiac | 224 (63.1) | 199 (62.8) | 25 (65.8) | 0.413 |
 Gastrointestinal | 74 (20.8) | 68 (21.5) | 6 (15.8) |  |
 Respiratory | 24 (6.8) | 18 (5.7) | 6 (15.8) |  |
 Neurological | 12 (3.4) | 12 (3.8) | 0 (0.0) |  |
 Renal urological | 9 (2.5) | 9 (2.8) | 1 (2.6) |  |
 Others | 15 (4.2) | 15 (4.7) | 0 (0.0) |  |