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Table 7 Comparison of the incidence of fetal SCAs among different age groups

From: The correlation between maternal age and fetal sex chromosome aneuploidies: a 8-year single institution experience in China

Age groups

No. of patients

45,Xa

47,XXYb

47,XXXc

47,XYYd

All SCAse

≤ 23

658

1(1.52)

1(1.52)

2(3.04)

0(0)

4(6.08)

24–28

4304

8(1.86)

4(0.93)

8(1.86)

5(1.16)

25(5.81)

29–33

5097

12(2.35)

8(1.57)

8(1.57)

11(2.16)

39(7.65)

34–38

6780

3(0.44)

33(4.87)

18(2.65)

18(2.65)

72(10.62)

39+

3570

2(0.56)

24(6.72)

8(2.24)

5(1.40)

39(10.92)

Total

20,409

26(1.27)

70(3.43)

44(2.16)

39(1.91)

179(8.77)

  1. Data are presented as n (per 1000), unless otherwise indicated
  2. aThe incidence of 45,X was significantly different among the groups (χ2 = 10.977, P = 0.027 < 0.05)
  3. bThe incidence of 47,XXY was significantly different among the groups (χ2 = 29.159, P = 0.000 < 0.05)
  4. cThe incidence of 47,XXX was significantly different among the groups (χ2 = 2.027, P = 0.731 > 0.05)
  5. dThe incidence of 47,XYY was significantly different among the groups (χ2 = 5.145, P = 0.273 > 0.05)
  6. eThe incidence of all SCAs was significantly different among the groups (χ2 = 10.197, P = 0.037 < 0.05)
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Molecular Cytogenetics

ISSN: 1755-8166