轻度(n = 125)

中度(n = 53)

重度(n = 16)

X²

P值

体重/(g)

1730

1490

1260

7.904

0.019

胎龄/(w)

33.14

32.43

31.22

2.396

0.302

PLT恢复时间(d)

6

8

9

6.118

0.047

孕次

2

2

3

6.602

0.037

凝血异常

18 (14.4%)

18 (33.9%)

9 (56.3%)

18.689

0.000

输血或血制品

26 (20.8%)

28 (52.8%)

13 (81.3%)

33.721

0.000

输血小板

0 (0.0%)

1 (1.8%)

9 (56.3%)

82.079

0.000

轻度出血

44 (35.2%)

18 (33.9%)

5 (31.3%)

0.109

0.947

重度出血

8 (6.4%)

1 (1.8%)

7 (43.8%)

30.048

0.000

无创呼吸机

54 (43.2%)

29 (54.7%)

12 (75.0%)

6.704

0.035

有创呼吸机

11 (8.8%)

7 (13.2%)

7 (43.8%)

15.441

0.000

死亡或放弃

7 (5.6%)

9 (17.0%)

5 (31.3%)

12.531

0.002