Table 1.
Participant characteristics for healthy control boys and patients with OCD or ASD
| Variables | HC (N = 20) Mean (s.d.) | ASD (N = 29) Mean (s.d.) | OCD (N = 20) Mean (s.d.) | F test (df) | p value |
|---|---|---|---|---|---|
| Age (years) | 15.29 (1.8) | 14.72 (1.8) | 15.74 (1.4) | 2.22 (2,66) | 0.12 |
| IQ | 118.90 (11.9) | 113.17 (13.1) | 117.70 (13.4) | 1.38 (2,66) | 0.26 |
| SCQ total score | 2.32 (2.3) | 18.66 (8.1) | − | 76.98 (1,47) | <0.001 |
| SDQ total score | 5.58 (4.2) | 19.66 (6.8) | 12.45 (5.6) | 35.56 (2,66) | <0.001 |
| SDQ emotional distress subscale | 0.93 (1.8) | 4.38 (2.9) | 4.35 (2.6) | 13.12 (2,66) | <0.001 |
| SDQ conduct subscale | 0.86 (1.1) | 2.69 (2.2) | 1.85 (1.5) | 6.55 (2,66) | 0.003 |
| SDQ peer relations subscale | 1.53 (1.7) | 6.59 (2.3) | 3.30 (3.0) | 28.72 (2,66) | <0.001 |
| SDQ hyperactive impulsive/inattentive subscale | 2.72 (2.4) | 5.93 (2.6) | 2.95 (2.7) | 12.52 (2,66) | <0.001 |
| SDQ prosocial behaviour subscale | 8.38 (2.4) | 4.41 (2.4) | 7.65 (2.6) | 18.61 (2,66) | <0.001 |
| ADOS communication score | – | 3.62 (1.2) | – | – | – |
| ADOS social interaction score | – | 9.03 (2.3) | – | – | – |
| ADOS communication + social | – | 12.66 (3.1) | – | – | – |
| ADOS stereotypy score | – | 1.52 (1.5) | – | – | – |
| ADI communication score | – | 16.59 (4.7) | – | – | – |
| ADI social interaction score | – | 19.97 (5.3) | – | – | – |
| ADI repetitive behaviour score | – | 6.45 (2.4) | – | – | – |
| CY-BOCS total score | – | – | 22.33 (5.8) | – | – |
| CY-BOCS – obsessions | – | – | 10.79 (3.6) | – | – |
| CY-BOCS – compulsions | – | – | 12.01 (3.1) | – | – |
ADI, autism diagnostic interview; ADOS, autism diagnostic observation schedule; ASD, autism spectrum disorder; CY-BOCS, Children's Yale-Brown obsessive-compulsive symptoms checklist; HC, healthy controls; OCD, obsessive-compulsive disorder; SCQ, social communication questionnaire; SDQ, strengths and difficulties questionnaire.