Divergences between different studies as to the incidence of OCPD among anorexics and bulimics have been found, which may in part reflect differences in the methodology chosen in different studies, as well as the difficulties of diagnosing personality disorders.
Forskelle i de forskellige undersøgelser af forekomsten af OCPD blandt anorektikere og bulimikere har fundet, hvilket delvist kan afspejle forskelle i den metode, der er valgt i forskellige undersøgelser, samt problemer med diagnosticering af personlighedsforstyrrelser.