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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