Table 1 Participant characteristics and sample sizes
From: Quantitative trait variation in ASD probands and toddler sibling outcomes at 24 months
Probands (n = 385) | Siblings | |||||||
|---|---|---|---|---|---|---|---|---|
ASD (n = 89) | No-ASD (n = 296) | Chi squarea | ||||||
n | % | n | % | n | % | χ2 | p | |
Sex | 14.69 | 0.0001 | ||||||
Female | 53 | 13.8 | 20 | 22.5 | 136 | 46.0 | ||
Male | 332 | 86.2 | 69 | 77.5 | 160 | 54.0 | ||
Child race | 10.97 | 0.6887 | ||||||
Asian | 3 | 0.8 | 1 | 1.1 | 3 | 1.0 | ||
Black | 12 | 3.1 | 3 | 3.4 | 10 | 3.4 | ||
More than one race | 36 | 9.4 | 13 | 14.6 | 26 | 8.8 | ||
White | 300 | 77.9 | 69 | 69.7 | 233 | 78.7 | ||
Not answered | 34 | 8.8 | 10 | 11.2 | 24 | 8.1 | ||
Maternal education | 4.03 | 0.1336 | ||||||
No college | 125 | 32.5 | 36 | 40.5 | 91 | 30.7 | ||
College degree | 153 | 39.7 | 28 | 31.5 | 125 | 42.2 | ||
Graduate degree | 94 | 24.4 | 23 | 25.8 | 71 | 24.0 | ||
Missing | 11 | 2.86 | 2 | 2.2 | 9 | 3.04 | ||
Number of assessmentsb | ||||||||
ADI-R | 372 | 96.6 | 86 | 96.6 | 281 | 94.9 | ||
ADOS | – | – | 75 | 84.3 | 261 | 88.2 | ||
MSEL | – | – | 87 | 97.8 | 295 | 99.7 | ||
SCQ | 346 | 89.9 | – | – | – | – | ||
VABS-II | 331 | 86.0 | 85 | 95.5 | 291 | 98.3 | ||