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)* |