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Number of siblings in the three groups.
| Siblings’ Disease | Age | Number of Children | |
|---|---|---|---|
| ASD | 53 | ||
| Mean | 5.49 | 2.34 | |
| Median | 5.00 | 2.00 | |
| Mode | 3 | 2 | |
| Standard Deviation | 1957 | 0.783 | |
| Down’s Syndrome | 53 | ||
| Mean | 5.94 | 2.40 | |
| Median | 6 | 2 | |
| Mode | 5 | 2 | |
| Standard Deviation | 1985 | 0.716 | |
| Control Group | 53 | ||
| Mean | 5.89 | 2.26 | |
| Median | 6.00 | 2.00 | |
| Mode | 5 | 2 | |
| Standard Deviation | 1987 | 0.486 | |
