Table 4 The risk of all abnormal foetal tissue chromosome karyotypes by age in all regions

Triploid

0.4(0.2–0.7)

0.8(0.4–1.9)

0.0(0.0–0.0)

0.4(0.0–2.8)

0.3(0.1–0.8)

0.2(0.0–1.4)

Trisomy

1.3(1.2–1.5)

1.3(1.1–1.6)

1.9(1.4–2.5)

1.1(0.8–1.6)

1.3(1.1–1.6)

1.2(0.9–1.5)

Mosaicism

0.6(0.4–1.0)

0.0(0.0–0.0)

0.8(0.2–3.6)

1.4(0.6–3.3)

1.6(0.3–7.6)

0.4(0.2–0.7)

45,X

0.6(0.4–1.1)

0.4(0.1–1.7)

1.0(0.2–4.4)

1.8(0.4–7.0)

0.3(0.1–1.3)

0.8(0.3–1.9)

Microduplication

1.2(0.9–1.5)

0.0(0.0–0.0)

1.5(0.4–5.2)

1.1(0.7–1.8)

1.2(0.6–2.6)

1.2(0.9–1.6)

Microdeletion

0.6(0.4–1.1)

0.3(0.0–2.0)

0.0(0.0–0.0)

0.6(0.2–2.1)

0.8(0.3–2.2)

1.3(0.5–3.2)

Monosomy

0.4(0.1–1.2)

2.7(0.5–14.1)

0.0(0.0–0.0)

0.0(0.0–0.0)

0.0(0.0–0.0)

0.2(0.0–1.6)