Table 1.
Participant demographics
| Partici- pant No. |
Sex | Infant race/ethnicity | Sibling with ASD |
Location | Age at first contact (months) |
Age at screening (months) |
Met ASQ-3 concern cut-off, by domain |
Met ASQ:SE-2 concern cut-off |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Commu- nication |
Gross motor | Fine motor | Problem solving |
Personal social | ||||||||
| 1 | F | White | y | Michigan, USA | 5 | 11 | y | y | ||||
| 2 | F | White | n | Victornia, Australia | 5 | 6 | y | y | y | |||
| 3 | F | Asian | n | California, USA | 9 | 12 | y | y | y | y | ||
| 4 | M | White | n | Massachusetts, USA | 4 | 9 | y | y | y | y | ||
| 5 | M | White, Hispanic | y | California, USA | 3 | 6 | y | |||||
| 6 | M | White | n | Georgia, USA | 6 | 11 | y | y | ||||
| 7 | F | White | y | Utah, USA | 6 | 7 | y | y | y | y | ||
| 8 | F | White | y | Washington DC, USA | 6 | 7 | y | y | y | |||
| 9 | M | White, Hispanic | n | Victoria, Australia | 7 | 8 | y | y | y | y | ||
| 10 | M | White | n | New York, USA | 10 | 10 | y | y | y | y | y | |
| 11 | F | White | n | Pennsylvania, USA | 9 | 9 | y | y | y | y | ||