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Reliability and validity of the Pervasive Developmental Disorders Assessment System
Author(s) -
Kurita Hiroshi,
Koyama Tomonori,
Inoue Kanna
Publication year - 2008
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.2008.01759.x
Subject(s) - pervasive developmental disorder , inter rater reliability , kappa , autism , developmental disorder , medical diagnosis , psychology , discriminant validity , test validity , reliability (semiconductor) , clinical psychology , psychometrics , psychiatry , criterion validity , validity , cohen's kappa , developmental psychology , medicine , construct validity , rating scale , computer science , philosophy , internal consistency , linguistics , pathology , power (physics) , quantum mechanics , physics , machine learning
Aim: To test the reliability and validity of the Pervasive Developmental Disorders Assessment System (PDDAS), a Japanese semistructured interview system. Methods: The PDDAS, consisting of 91 items including 12 major items corresponding to 12 items in criterion A of DSM‐IV autistic disorder criteria, 36 items on autistic symptoms and three Asperger's disorder (AS) screening items for diagnosing pervasive developmental disorders (PDD) and their subtypes and 40 items for other information including early development and past/family histories, was administered to mothers of 77 PDD children and 64 non‐PDD children. Results: The PDDAS had satisfactory interrater reliability (ranges of κ, r and raw agreement rate were 0.69–1.00 in 76 items, 1.00 in 11 items and 0.91–1.00 in four κ un‐calculable items, respectively). Thirty‐three of the 36 items and all of the 12 major items scored significantly higher in the PDD than non‐PDD groups to show satisfactory discriminant validity. PDDAS and consensus DSM‐IV diagnoses agreed in the 77 children in PDD diagnosis and disagreed in only two children in subtype diagnoses of autistic disorder and PDD not otherwise specified. Conclusions: The PDDAS, which takes 1.5 h to administer, seems to have clinical and research utility, although further investigation is necessary.