Mothers’ education level

χ²

Primary education

Secondary education

Vocational education and training

Higher education

ASD

61

3 (4.9%)

18 (29.5%)

14 (22.9%)

26 (42.7%)

16.37**

Down

55

2 (3.6%)

15 (27.3%)

17 (30.9%)

21 (38.2%)

Typical

90

1 (1.1%)

13 (14.4%)

16 (17.8%)

60 (66.7%)