Background: Autistic Spectrum Disorder can manifest in wide range of cognitive level and severity. In this decade, prevalence of PDDs in Thailand has been significantly increasing. Even if there is PDDSQ Thai version developed and used as screening test for the individuals with PDD. It is the useful to identify the severe or full-criteria cases of autism but it cannot be utilized well to indicate the children in mild severity, such as high-functioning autism and Asperger Syndrome. Thus mild ASD were unidentified.
Objectives: To develop the screening questionnaires called Thai version of Autism Spectrum Screening Questionnaire (Thai-ASSQ) which were designed in order to screen Asperger disorder, Pervasive Developmental Disorder, Not-otherwise Specified (PDDNOS), the high function Autism Spectrum disorders in school age children in Thailand.
Methods: 400 of Parents and Teachers of Children aged 4-18 years with PDDNOS, high function autism and Asperger disorder, other psychiatric problems as well as normal typical children were asked to complete Thai-ASSQ. Reliability of the questionnaire was assessed by testing the two-week test-retest reliability and internal consistency. In addition, to test the validity, the authors identified the sensitivity, specificity and kappa index of agreement comparing with clinical diagnosis performed by child and adolescent psychiatrist. Ultimately, factor analysis was also conducted.
Results: Initial results of this study, such as reliability, validity, kappa index of agreement as well as the cut of point of this screening test will be presented at the conference.
Conclusions: The results, the capacity of this test in using as the screening test of mild-degree of PDD, the epidemiological study and the implications in clinical use will be discussed.
Keywords: Development, Screening questionnaire, Pervasive Developmental Disorder, Asperger Disorder, High function Autism
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