Table 2.
Characteristics of the subjects.
| All | Successful extubation group | Reintubation group | ||||||
|---|---|---|---|---|---|---|---|---|
| Total | p value | Respiratory insufficiency group | p value | Nonrespiratory insufficiency group | p value | |||
| Patients, n (%) | 262 | 250 (95.4) | 12 (4.5) | 7 (2.6) | 5 (1.9) | |||
| Age | 64.0 ± 16.2 | 65.0 ± 16.1 | 60.0 ± 16.8 | 0.151 | 62.0 ± 18.2 | 0.808 | 43.0 ± 13.3 | 0.053 |
| Sex (male : female) | 149 : 113 | 144 : 106 | 5 : 7 | 0.276 | 4 : 3 | 0.981 | 1 : 4 | 0.093 |
| APACHE score | 12.5 ± 7.7 | 12.0 ± 7.5 | 17.5 ± 9.1 | 0.257 | 17.0 ± 8.2 | 0.626 | 18.0 ± 11.1 | 0.230 |
| SOFA score | 6.0 ± 2.9 | 6.0 ± 2.9 | 5.0 ± 2.9 | 0.979 | 7.0 ± 2.7 | 0.960 | 5.0 ± 3.5 | 0.988 |
| Intubation duration (days) | 1.0 ± 4.0 | 1.0 ± 3.9 | 4.5 ± 5.0 | 0.006 | 4.0 ± 6.0 | 0.253 | 9.0 ± 2.9 | 0.003 |
| P/F ratio | 350.0 ± 89.2 | 360.0 ± 88.3 | 341.0 ± 106.8 | 0.327 | 252.0 ± 106.6 | 0.056 | 350.0 ± 81.2 | 0.440 |
| RSBI | 43.0 ± 17.0 | 43.0 ± 16.6 | 63.0 ± 20.6 | 0.03 | 58.0 ± 19.0 | 0.106 | 68.0 ± 24.7 | 0.175 |
| The positive fluid balance (ml) | 85.0 ± 1082.5 | 103.1 ± 1088.6 | −291.5 ± 902.7 | 0.141 | 67.0 ± 580.6 | 0.734 | −793.4 ± 1093.3 | 0.056 |
| PaCO2 (mmHg) | 39.7 ± 5.0 | 39.5 ± 4.9 | 42.8 ± 6.4 | 0.119 | 42.6 ± 8.2 | 0.478 | 42.9 ± 3.7 | 0.108 |
| 28-day mortality, n (%) | 2 (0.7) | 2 (0.7) | 0 (0) | 0.756 | 0 (0) | 0.812 | 0 (0) | 0.842 |
| 90-day mortality, n (%) | 14 (5.3) | 14 (5.3) | 0 (0) | 0.399 | 0 (0) | 0.520 | 0 (0) | 0.592 |
Values are expressed as means ± standard deviations or numbers (percentages). The p value of each group is described in comparison to the successful extubation group. APACHE: acute physiology and chronic health evaluation; SOFA: sequential organ failure assessment; P/F ratio: pressure of arterial oxygen to fractional inspired oxygen concentration ratio; RSBI: rapid shallow breathing index; PaCO2: partial pressure of arterial carbon dioxide.