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Acta Paediatr. 2010 Sep;99(9):1425-8. doi: 10.1111/j.1651-2227.2010.01835.x.

Brief report: validity of Finnish registry-based diagnoses of autism with the ADI-R.

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  • 1Department of Child Psychiatry, University of Turku, Turku, Finland. katja.lampi@utu.fi

Abstract

AIMS:

The aim of the study was to explore the validity of registry-based diagnoses of autism in Finland using the Autism Diagnostic Interview - Revised (ADI-R). This study was designed for the Finnish Prenatal Study of Autism and Autism Spectrum Disorders (FIPS-A), an ongoing research project where registry-based diagnoses will be used for epidemiological studies.

METHODS:

In this small pilot study, a clinical sample of 95 subjects diagnosed with childhood autism or pervasive developmental disorder/pervasive developmental disorder - not otherwise specified (PDD/PDD-NOS) or Asperger's syndrome according to the Finnish Hospital Discharge Register (FHDR) was gathered nationwide. A small control group consisting of siblings without any registered diagnoses of those being examined was also included in the study. Diagnoses were further re-evaluated by interviewing parents with the ADI-R.

RESULTS:

The mean scores of autistic subjects clearly exceeded cut-off limits for autism on all three ADI-R domains and 96% of the subjects with registered diagnosis of childhood autism fulfilled the criteria based on the instrument as well.

CONCLUSION:

These results suggest that the validity of Finnish registry-based diagnoses of childhood autism can be considered good. Our findings lay important groundwork for further population- based studies of the aetiology of autism.

© 2010 The Author(s)/Journal Compilation © 2010 Foundation Acta Paediatrica.

PMID:
20412100
[PubMed - indexed for MEDLINE]
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