Table 1 Participant characteristics (n = 1019)
Characteristic | ASD |
|---|---|
Age (years), mean ± SD (range) | 4.12 ± 1.17 (2 ~ 6.98) |
Sex, n (%) | |
 Male | 835(81.9) |
 Female | 184(18.1) |
Ethnicity, n (%) | |
 Han | 950(93.2) |
 Others | 69(6.8) |
Maternal education level, n (%) | |
 High school or below | 489(48.0) |
 College or above | 530(52.0) |
Paternal education level, n (%) | |
 High school or less | 431(42.3) |
 College or above | 588(57.7) |