Table 5 Subgroup analysis of reintubation risk for each predictive variable, with and without noninvasive respiratory support after extubation
| Â | Subgroup | P value for interaction | |
|---|---|---|---|
Patients without noninvasive respiratory support (n = 241) | Patients with noninvasive respiratory support (n = 114) | ||
Reintubation, n (%) | 17/241 (7.1) | 21/114 (18.4) | Â |
Predictive variable: Underlying respiratory disease or pneumonia occurrence | 0.193 | ||
Crude OR (95%CI) | 4.00 (1.45–11.00) | 1.58 (0.60–4.14) |  |
P value | 0.007 | 0.357 | Â |
Predictive variable: Number of endotracheal suctioning episodes during the 24Â h before extubation | 0.877 | ||
Crude OR (95%CI) | 1.07 (0.98–1.18) | 1.08 (1.01–1.16) |  |
P value | 0.143 | 0.029 | Â |