| Regular group | Improved group | p value* |
Frequency of 24-hour sputum suction | 5.0 ± 0.5 | 5.2 ± 0.9 | 0.362 |
Total time on mechanical ventilation | 40.0 ± 14.6 | 38.4 ± 14.2 | 0.687 |
PICU hospitalization days | 4.5 ± 0.6 | 4.1 ± 0.7 | 0.047 |