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Direct linkDelobel-Ayoub, M.; Saemundsen, E.; Gissler, M.; Ego, A.; Moilanen, I.; Ebeling, H.; Rafnsson, V.; Klapouszczak, D.; Thorsteinsson, E.; Arnaldsdóttir, K. M.; Roge, B.; Arnaud, C.; Schendel, D. – Journal of Autism and Developmental Disorders, 2020
We estimated autism spectrum disorder (ASD) prevalence in 7-9 year-old children in 2015 using data from three nationwide health registry systems (Denmark, Finland, Iceland) and two French population-based regional registries. Prevalence ranged from 0.48% in South-East France to 3.13% in Iceland (South-West France: 0.73%, Finland: 0.77%, Denmark:…
Descriptors: Foreign Countries, Autism, Pervasive Developmental Disorders, Incidence
Jensen, Christina Mohr; Steinhausen, Hans-Christoph; Lauritsen, Marlene Briciet – Journal of Autism and Developmental Disorders, 2014
This study investigated time trends and associated factors of incidence rates of diagnosed autism spectrum disorders (ASD) across the lifespan from 1995 to 2010, using data from the Danish Psychiatric Central Research Registry. First time diagnosis of childhood autism, atypical autism, Asperger's syndrome, or pervasive developmental…
Descriptors: Foreign Countries, Incidence, Trend Analysis, Pervasive Developmental Disorders
Mouridsen, Svend Erik; Rich, Bente; Isager, Torben – Journal of Autism and Developmental Disorders, 2013
We performed a nationwide, register-based retrospective follow-up study of epilepsy in all people who were born between January 1, 1980 and June 29, 2006 and registered in the Danish Psychiatric Central Register with Asperger's syndrome on February 7, 2011. All 4,180 identified cases with AS (3,431 males and 749 females) were screened through the…
Descriptors: Age Differences, Asperger Syndrome, Epilepsy, Followup Studies
Lauritsen, Marlene B.; Astrup, Aske; Pedersen, Carsten Bøcker; Obel, Carsten; Schendel, Diana E.; Schieve, Laura; Yeargin-Allsopp, Marshalyn; Parner, Erik T. – Journal of Autism and Developmental Disorders, 2014
The etiology of autism spectrum disorders (ASD) is for the majority of cases unknown and more studies of risk factors are needed. Geographic variation in ASD occurrence has been observed, and urban residence has been suggested to serve as a proxy for etiologic and identification factors in ASD. We examined the association between urbanicity level…
Descriptors: Autism, Pervasive Developmental Disorders, At Risk Persons, Urban Areas
Kocovska, Eva; Biskupsto, Rannva; Gillberg, I. Carina; Ellefsen, Asa; Kampmann, Hanna; Stora, Tormoour; Billstedt, Eva; Gillberg, Christopher – Journal of Autism and Developmental Disorders, 2012
We have followed up a 2002 population study of autism prevalence in 15-24-year olds in the Faroe Islands. The rate of ASD grew significantly from 0.56% in 2002 to 0.94% in 2009. Although these results are within the range of typical findings from other studies, there were some interesting details. There were--in addition to 43 originally diagnosed…
Descriptors: Gender Differences, Incidence, Autism, Foreign Countries
Parner, Erik T.; Thorsen, Poul; Dixon, Glenys; de Klerk, Nicholas; Leonard, Helen; Nassar, Natasha; Bourke, Jenny; Bower, Carol; Glasson, Emma J. – Journal of Autism and Developmental Disorders, 2011
Prevalence statistics for autism spectrum disorders (ASD) vary widely across geographical boundaries. Some variation can be explained by diagnostic methods, case ascertainment and age at diagnosis. This study compared prevalence statistics for two distinct geographical regions, Denmark and Western Australia, both of which have had population-based…
Descriptors: Incidence, Autism, Identification, Classification
