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Table 2 Gestational age distribution of causes of fetal loss in second and third trimester

From: Analysis of the causes and influencing factors of fetal loss in advanced maternal age: a nested case-control study

Causes

Second trimester (n = 192)

Third trimester (n = 47)

Total, n (%)

14–19+ 6 (n = 58)

20–23+ 6 (n = 62)

24–27+ 6 (n = 72)

28–31+ 6 (n = 26)

32–36+ 6 (n = 19)

≥ 37

(n = 2)

Fetal factors

14 (24.14)

27 (43.55)

44 (61.11)

12 (46.15)

7 (36.84)

0 (0.00)

104 (43.51)

Maternal factors

13 (22.41)

18 (29.03)

12 (16.67)

9 (34.62)

6 (31.58)

1 (50.00)

59 (24.69)

Umbilical cord factors

1 (1.72)

6 (9.68)

7 (9.72)

3 (11.54)

4 (21.05)

1 (50.00)

22 (9.21)

Placental factors

5 (8.62)

6 (9.68)

5 (6.94)

2 (7.69)

2 (10.53)

0 (0.00)

20 (8.37)

Unknown reasons

25 (43.10)

5 (8.06)

4 (5.56)

0 (0.00)

0 (0.00)

0 (0.00)

34 (14.23)