Skip to main content

Table 1 Participant characteristics (N = 1580)

From: Children’s autistic traits and peer relationships: do non-verbal IQ and externalizing problems play a role?

Study characteristics

Total study

By sex

N

Mean (SD)

Boys (N = 769)

Girls (N = 811)

Maternal

 Education (%)

  High

787

49.8

49.5

50.1

  Mid

351

22.2

22.8

21.7

  Low

119

7.5

6.5

8.5

 Single parenthood (% yes)

187

11.8

13.1

16.2

 Autism Quotient score

817

50.1 (8.6)

50.4 (8.8)

50.6 (8.8)

Child

 Age (years)

1580

7.8 (0.7)

7.7 (0.7)

7.6 (0.7)

 Sex (% boys)

769

48.7

 Ethnicity (%)

  Dutch

895

56.6

55.9

57.3

  Non Dutch

685

43.4

44.1

42.7

Autistic traits score

1580

3.6 (3.4)

4.7 (3.6)*

3.5 (2.9)*

Peer acceptance score

1580

0.2 (0.1)

0.2 (0.1)

0.2 (0.1)

Peer rejection score

1580

0.2 (0.1)

0.2 (0.1)

0.1 (0.1)

Prosocial behavior score

1580

0.2 (0.1)

0.2 (0.1)

0.2 (0.1)

Reciprocity score

1496

0.5 (0.3)

0.5 (0.3)

0.5 (0.3)

Non-verbal IQ

925

101.9 (14.6)

101.1 (14.8)

101.7 (14.2)

Externalizing problems score

808

2.9 (5.8)

4.7 (6.4)*

2.7 (4.3)*

  1. Data represent means (SDs) unless specified otherwise
  2. Autism Quotient aims to investigate whether adults of average intelligence have symptoms of autism spectrum conditions
  3. Missing data in the total study: 20.4% Maternal education, 19.7% Single Parenthood, 48.3% Autism Quotient, 22.2% Non-verbal IQ, 31.6% Autistic Traits, 26.9% Externalizing Problems
  4. *p < 0.05 for comparison between boys and girls