S. Ehlers et C. Gillberg, THE EPIDEMIOLOGY OF ASPERGER SYNDROME - A TOTAL POPULATION STUDY, Journal of child psychology and psychiatry and allied disciplines, 34(8), 1993, pp. 1327-1350
This paper describes a total population study of Asperger syndrome usi
ng a two-stage procedure. All school children in an outer Goteborg bor
ough were screened. Final case selection based on clinical work-up sho
wed a minimum prevalence of 3.6 per 1.000 children (7-16 years of age)
using Gillberg and Gillberg's criteria and a male to female ratio of
4:1. Including suspected and possible Asperger syndrome cases, the pre
valence rose to 7.1 per 1.000 children and the male:female ratio dropp
ed to 2.3:1. These findings are discussed as they relate to previously
published results in the field and to findings obtained using Szatmar
i et al.'s and ICD-10 draft criteria for the disorder.