Autism phenotype versus registered diagnosis in Swedish children: prevalence trends over 10 years in general population samples.

ABSTRACT:

Objective

To compare the annual prevalence of the autism symptom phenotype and of registered diagnoses for autism spectrum disorder during a 10 year period in children.

Design

Population based study.

Setting

Child and Adolescent Twin Study and national patient register, Sweden.

Participants

19, 993 twins (190 with autism spectrum disorder) and all children (n=1,078,975; 4620 with autism spectrum disorder) born in Sweden over a 10 year period from 1993 to 2002.

Main outcome measures

Annual prevalence of the autism symptom phenotype (that is, symptoms on which the diagnostic criteria are based) assessed by a validated parental telephone interview (the Autism-Tics, ADHD and other Comorbidities inventory), and annual prevalence of reported diagnoses of autis

SUBMITTER: Lundstrom S 

PROVIDER: S-EPMC4413835 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature