组别

例数

NRDS (例，%)

呼吸衰竭(例，%)

肺出血(例，%)

PPHN (例，%)

BPD (例，%)

未使用组

43

16 (37.2%)

10 (23.3%)

0 (0%)

2 (4.7%)

7 (16.7%)

使用1~2次组

66

24 (36.4%)^j

13 (19.7%)

3 (4.5%)

4 (6.1%)

14 (21.2%)

使用3~4次组

152

24 (15.8%)^k

28 (18.4%)

1 (0.7%)

6 (3.9%)

36 (23.7%)

H、F或c²值

15.003

0.500

3.905

0.712

0.973

P值

0.001

0.779

0.076

0.775

0.615