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% |