Table 1 Demographic characteristics of ASD + E and ASD-only participants

Age^a (years)

8.273 ± 4.326

10.227 ± 5.814

Gender^b

 Male

43 (97.7 %)

21 (95.5 %)

 Female

1 (2.3 %)

1 (4.5 %)

FSIQ^a

62.318 ± 17.095

55.455 ± 18.397

VIQ^a

67.80 ± 22.130

58.68 ± 21.007

PIQ^a

62.73 ± 15.813

58.27 ± 16.799

Intellectual disability based on FSIQ^b

 Non-intellectual disability IQ >70

12 (27.3 %)

5 (22.7 %)

 Mild intellectual disability IQ 50–70

20 (45.5 %)

6 (27.3 %)

 Moderate-severe intellectual disability IQ <50

12 (27.3 %)

11 (50.0 %)

Gestation age (weeks)^b

 ≤31

1 (2.3 %)

0 (0 %)

 32–36

8 (18.2 %)

2 (9.1 %)

 37–41

35 (79.5 %)

54 (81.8 %)

 ≥42

0 (0 %)

1 (4.5 %)

Birth weight (g)^b

 1500–2499

2 (4.5 %)

1 (4.5 %)

 2500–3999

41 (93.2 %)

17 (77.3 %)

 4000–4499

1 (2.3 %)

4 (18.2 %)

Obstetrics complication^b

 No

38 (86.4 %)

17 (77.3 %)

 Yes

6 (13.6 %)

5 (22.7 %)

Antipsychotic medication^b

 No

25 (56.8 %)

8 (36.4 %)

 Yes

19 (43.2 %)

14 (63.6 %)