Table 2.
Distribution of prenatal diagnosis by health district.
| Frequency | Rates (%) | Health District | |||
|---|---|---|---|---|---|
| West | Central | East | |||
| Family history of hearing, visual, neurological, or psychiatric disorders of possible recurrence | 3 | 1.4 | 0 | 2 | 1 |
| Twin pregnancies or higher-order multiple pregnancies | 3 | 1.4 | 2 | 1 | 0 |
| Sociobiological risk factors | 5 | 2.3 | 4 | 1 | 0 |
| Somatic malformation syndromes and congenital anomalies | 44 | 20.0 | 22 | 19 | 3 |
| CNS malformations congenital hydrocephalus | 8 | 3.6 | 4 | 4 | 0 |
| Malformations affecting other organs | 11 | 5.0 | 5 | 3 | 3 |
| Complicated pregnancies | 21 | 9.5 | 13 | 5 | 3 |
| Uterine growth retardation | 9 | 4.1 | 4 | 4 | 1 |
| Genetic factors * | 33 | 15.0 | 23 | 6 | 4 |
| Genes * | 9 | 4.1 | 3 | 5 | 1 |
| Chromosomal aberrations | 63 | 28.6 | 27 | 30 | 6 |
| Intrauterine physical factors | 1 | 0.5 | 1 | 0 | 0 |
| Other prenatal diagnosis | 10 | 4.5 | 3 | 5 | 2 |
| Total | 220 | 100.0 | 111 (50%) | 85 (39%) | 24 (11%) |
* The genes and genetic factors categories are defined separately within the biological risk factors outlined by the Early Childhood Diagnosis Organization. The genes category collects recognized anomalies such as Rett syndrome or sickle cell traits, while genetic factors encompass other genetic disorders not included in the genes section.