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Table 1 Classification of autism cases in the Early Markers for Autism studya

From: Increased midgestational IFN-γ, IL-4 and IL-5 in women bearing a child with autism: A case-control study

Autism spectrum disorder subgroups Number of subjects
Total 84
   Autism 55
   Asperger's syndrome 0
   PDD-NOS 5
   Unknown 24
Onset type  
   Early onset 64
   Regressive 17
   Unknown 3
Intellectual disability  
   Yes 34
   No 30
   Unknown 20
  1. aPDD-NOS: pervasive developmental disorder not otherwise specified.