A 2009 study involving adult autistic people found that 40% of those diagnosed with Asperger's syndrome met the diagnostic requirements for a co-morbid OCPD diagnosis.
En undersøgelse fra 2009, der involverer voksne autistiske mennesker, fandt, at 40% af dem, der er diagnosticeret med Aspergers syndrom opfyldte de diagnostiske krav til en co-morbid OCPD-diagnose.