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Table 2 Chromosomal abnormalities in different high-risk factors groups

From: Application of the BACs-on-Beads assay for the prenatal diagnosis of chromosomal abnormalities in Quanzhou, China

High risk factors

Cases

Aneuploidies

Microdeletion/ microduplication

Other chromosomal abnormalities

Detection rate

Advanced maternal age

190

6

3

3

6.32%

High-risk NIPT results

163

65

3

0

41.72%

Abnormal ultrasound

134

8

6

4

13.43%

High-risk serological screening results

478

2

7

3

2.51%

Adverse pregnancy history

159

1

0

2

1.89%

Two or more types of high-risk factors

279

12

4

11

9.68%

Total

1403

94

23

23

9.98%