Table 3 Multiple regression analyses predicting the CSHQ total score from the ABC and SP sub-scales. Model 1: When using all ABC and SP sub-scales as well as age, ADOS, and cognitive scores. Model 2: When using only the ABC irritability sub-scale and the SP sensitivity sub-scale as well as their interaction term

Model 1: adjusted R² = 0.31

 ABC

  Irritability

2.30

< 0.05

  Social withdrawal

1.42

0.16

  Stereotypical behavior

0.28

0.78

  Hyperactivity

-0.56

0.57

  Inappropriate speech

0.66

0.51

 SP

  Seeking

1.45

0.15

  Avoiding

-0.37

0.70

  Sensitivity

2.62

< 0.01

  Low registration

-0.77

0.43

 Age

-0.56

0.57

 ADOS Score

0.98

0.32

 Cognitive Score

1.06

0.29

Model 2: adjusted R² = 0.35

 ABC

  Irritability

3.60

< 0.001

 SP

  Sensitivity

5.11

< 0.001

 Interaction

  Irritability*Sensitivity

3.53

< 0.001