Table 1 Characteristics of patients with Down syndrome versus other intellectual disabilities
| Â | Down syndrome | Intellectual disabilities | t or X 2 |
|---|---|---|---|
N | 49 | 70 | Â |
Mean age, years | 21.39 (5.40) | 22.07 (3.59) | t (123) = −.78 |
13 to 19Â years | 38% | 35% | NS |
20 to 29Â years | 62% | 65% | Â |
Gender | 49% M, 51% F | 58% M, 42% F | NS |
Level of ID | Â | Â | NS |
Mild | 69% | 73% | Â |
Moderate | 19% | 15% | Â |
Severe | 12% | 12% | Â |
Race |  |  | X 2 (3) = 8.65** |
Caucasian | 69% | 71% | Â |
African American | 13% | 24% | Â |
Hispanic | 14% | 3% | Â |
Asian/Other | 4% | 2% | Â |