Table 2.
Demographic information and age distribution of individuals with Down syndrome included in BioBIM (N = 454).
| Cases number | % | |
|---|---|---|
| Age group, years* | ||
| 1–3 | 22 | 4.85 |
| 4–6 | 24 | 5.29 |
| 7–9 | 42 | 9.25 |
| 10–12 | 61 | 13.44 |
| 13–15 | 57 | 12.56 |
| 16–18 | 63 | 13.88 |
| 19–21 | 40 | 8.81 |
| 22–24 | 44 | 9.69 |
| 25–27 | 30 | 6.61 |
| 28–30 | 24 | 5.29 |
| 31–33 | 15 | 3.30 |
| 34–36 | 11 | 2.42 |
| 37–39 | 6 | 1.32 |
| 41–43 | 7 | 1.54 |
| 46–50 | 5 | 1.10 |
| 51–55 | 3 | 0.66 |
| Gender | ||
| Female | 201 | 44.27 |
| Male | 253 | 55.73 |
| Chromosomal assessment | ||
| Non-disjunction | 418 | 92.07 |
| Translocation | 11 | 2.42 |
| Mosaicism | 5 | 1.10 |
| NA | 20 | 4.41 |
| Geographical origin | ||
| Southern Italy | 232 | 51.10 |
| Central Italy | 200 | 44.05 |
| Northern Italy | 18 | 3.96 |
| Other | 4 | 0.88 |
*
Age at the time of recruitment to the biobank.