Table 3 Comparing Control and Subthreshold Autistic Traits Children Who Participated in the Diagnostic Assessment
| Â | Control | Subthreshold ASD | F/x2, p |
|---|---|---|---|
|  | n = 35 | n = 25 |  |
Child characteristics | |||
 Age in years, mean (SD) | 6.19 (0.36) | 5.76 (0.31)**** | F(1,59) = 23.56, p < .0001 |
 Male, n (%) | 18 (51.43) | 17 (68.00) | x2 = 2.24, p = .13 |
Autistic traits (SRS), mean (SD) | |||
 Social communication/interaction | 24.51 (10.47) | 48.09 (10.07)**** | F(1,59) = 122.53, p < .0001 |
 Restricted/ repetitive behavior | 3.67 (3.64) | 10.40 (4.32)**** | F(1,59) = 61.58, p < .0001 |
 Total raw score | 28.18 (13.63) | 58.49 (12.66)**** | F(1,59) = 127.71, p < .0001 |
Emotional/behavioral problems (SDQ), mean (SD) | |||
 Emotional symptoms | 1.23 (1.31) | 3.08 (2.24)**** | F(1,59) = 14.83, p < .0001 |
 Conduct problems | 1.37 (1.19) | 3.46 (1.77)**** | F(1,59) = 25.96, p < .0001 |
 Hyperactivity/Inattention problems | 1.91 (1.48) | 5.25 (2.56)**** | F(1,59) = 35.36, p < .0001 |
 Peer problems | 1.03 (1.34) | 3.00 (1.79)**** | F(1,59) = 27.25, p < .0001 |
 Prosocial behavior | 7.11 (1.89) | 5.29 (2.22)**** | F(1,59) = 16.01, p < .0001 |
 Total difficulties | 5.54 (3.11) | 14.79 (5.18)**** | F(1,59) = 69.28, p < .0001 |
Intelligence quotient (WIPSSI), mean (SD) | |||
 VIQ | 109.64 (15.78) | 94.75 (17.50)** | F(1,59) = 8.66, p < .005 |
 PIQ | 118.94 (15.36) | 107.25 (12.70)* | F(1,59) = 5.91, p < .05 |
 FIQ | 117.00 (15.89) | 100.60 (14.37)** | F(1,59) = 8.78, p < .005 |