Table 2 The comparison of therapeutic outcomes between the two groups

 MV within72 h after extubation

21 (23)

35 (38)

5.031

0.025

 Mechanical ventilation duration,^a,d

0 (0–3.8)

1.5 (0–9)

2.73

0.006

 Noninvasive ventilation duration, ^a,d

11.6 (6–28)

13.8 (7–25.4)

0.426

0.670

 Total oxygen therapy duration, ^a,d

22.6 (9.7–35)

26.5 (14–39)

0.804

0.421

 Hospitalization, ^a,d

45 (32–62)

47 (38–67)

0.869

0.385

 Pulmonary surfactant operate duration, ^a,h

3 (1.5–5)

3 (2–6)

1.072

0.284

 Averaging times of using pulmonary surfactant ^b

1.05 ± 0.23

1.17 ± 0.44

2.199

0.028

 maximum FiO₂ ^b

0.32 ± 0.05

0.35 ± 0.09

0.869

0.004