Timing of conception

Before the disaster

After the disaster

9 - 7 months

n = 2097

6 - 4 months

n = 2528

≤3 months

n = 2428

≤3 months

n = 1728

4 - 6 months

n = 1647

7 - 9 months

n = 1872

p

Maternal age, y (mean ± SD)

30.2 ± 4.9

30 ± 5.1

30.4 ± 5.0

29.8 ± 5.0*

30.2 ± 5.0

30.4 ± 5.1

0.003

Unknown/missing

0

0

0

0

8

12

Single pregnancy

2065 (99.2)

2499 (99.0)

2403 (99.1)

1707 (99.0)

1632 (99.1)

1852 (98.9)

0.967

Twin pregnancy

17 (0.8)

25 (1.0)

22 (0.9)

18 (1.0)

15 (0.9)

20 (1.1)

Unknown/missing

0

0

0

0

0

0

Infertility treatment

Natural conception

2006 (95.7)

2396 (94.8)

2318 (95.5)

1689 (97.7)**

1560 (94.7)

1772 (94.7)

<0.001

Ovulation stimulation

38 (1.8)

46 (1.8)

42 (1.7)

16 (0.9)

34 (2.1)

37 (2.0)

0.13

Artificial insemination

15 (0.7)

23 (0.9)

27 (1.1)

7 (0.4)

10 (0.6)

20 (1.1)

0.111

In-vitro fertilization

38 (1.8)

63 (2.5)

41 (1.7)

16 (0.9)***

43 (2.6)

43 (2.3)

0.002

Unknown/missing

0

0

0

0

0

0

Medical complications

Hypertension

8 (0.38)

3 (0.12)

7 (0.29)

3 (0.17)

5 (0.30)

5 (0.27)

0.56

Diabetes

5 (0.24)

8 (0.32)

3 (0.12)

5 (0.28)

0

5 (0.27)

0.257

Cancer

5 (0.24)

12 (0.47)

7 (0.29)

10 (0.58)

8 (0.49)

10 (0.53)

0.466

Respiratory disease

42 (2.0)

50 (1.98)

47 (1.94)

41 (2.37)

80 (4.86)

79 (4.22)

<0.001

Thyreoid disease

30 (1.43)

50 (1.98)

30 (1.24)

30 (1.74)

32 (1.94)

33 (1.76)

0.318

Mental disorder

30 (1.43)

44 (1.74)

42 (1.73)

26 (1.50)

41 (2.49)

59 (3.15)

<0.001

Others

134 (6.39)

159 (6.29)

173 (7.13)

109 (6.31)

95 (5.77)

102 (5.45)

0.313

Unknown/missing

0

0

0

0

0

0