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Table 4 Model fitting for autistic symptoms and CCPT performance to predict ADHD symptoms in unaffected siblings (US) of autism probands and in US of AS probands

From: ADHD-related symptoms and attention profiles in the unaffected siblings of probands with autism spectrum disorder: focus on the subtypes of autism and Asperger’s disorder

 

Inattentive

Hyperactive/impulsive

Oppositional

 

US of autism

US of AS

US of autism

US of AS

US of autism

US of AS

 

β ± SE

p

β ± SE

p

β ± SE

p

β ± SE

p

β ± SE

p

β ± SE

p

Age

      

−0.30 ± 0.14

0.038

    

Autistic symptoms (SCQ)

 Social deficits

0.43 ± 0.18

0.017

          

 Communication deficits

      

0.89 ± 0.44

0.047

    

 Stereotyped behaviors

1.20 ± 0.37

0.002

1.99 ± 0.28

<.001

0.71 ± 0.31

0.024

1.41 ± 0.031

<.001

1.13 ± 0.32

<.001

1.87 ± 0.26

<.001

CCPTa

 Perseveration

0.14 ± 0.05

0.003

  

0.13 ± 0.04

0.001

      

 Detectability

          

−4.36 ± 1.67

0.011

 Response style

  

3.51 ± 1.67

0.039

        

 Hit SE block change

          

−10.20 ± 4.44

0.025

Model fitting

R-square (%)

9.4

 

48.7

 

11.6

 

55.9

 

18.7

 

42.8

 

F value

12.44

 

35.16

 

7.77

 

30.84

 

9.01

 

18.20

 

P value

<.001

 

<.001

 

<.001

 

<.001

 

<.001

 

<.001

 
  1. There was no effect from sex or parental educational level
  2. Abbreviations: SCQ the Social Communication Questionnaire, CCPT Conner’s Continuous Performance Test, RT reaction time, β estimate of regression coefficient, SE standard error, ISI inter-stimulus interval
  3. aOnly the significant CCPT indexes were presented