| target group | control group | ||||||
| ASD | DS | ID | TD | ||||
| 4 years | 5 years | 6years | |||||
| (n = 11) | (n = 16) | (n = 10) | (n = 16) | (n = 19) | (n = 23) | ||
| CA | Range (months) | 89 - 208 | 104 - 217 | 79 - 219 | 48 - 59 | 60 - 69 | 72 - 79 |
| Mean (months) | 150.6 | 163.4 | 155.9 | 52.3 | 64.1 | 74.4 | |
| SD (months) | 33.8 | 30.7 | 47.1 | 3.8 | 3.2 | 2.1 | |
| MA | Range (months) | 60 - 102 | 57 - 80 | 50 - 88 | 48 - 59 | 60 - 69 | 72 - 79 |
| Mean (months) | 78.5 | 67.8 | 70.9 | 52.3 | 64.1 | 74.4 | |
| SD (months) | 14.9 | 7.4 | 12.8 | 3.8 | 3.2 | 2.1 | |
| IQ | Range (months) | 35 - 83 | 26 - 62 | 30 - 78 | - | - | - |
| Mean (months) | 56.5 | 43.1 | 49.5 | - | - | - | |
| SD (months) | 14.6 | 8.3 | 18.1 | - | - | - | |