title: [Psychometric properties of the Japanese version of the Autism Spectrum Screening Questionnaire (ASSQ): development of a short form].
abstract: We examined the psychometric properties of the Japanese version of the Autism Spectrum Screening Questionnaire (ASSQ) and developed a short-form. This study included 157 children with autism spectrum disorders (ASD, ages 7-18, 128 boys) and 4,101 healthy controls (ages 7-15, 3,344 boys) from a general population with a controlled male-female ratio. Four factors (Unusual Interests, Sociality, Peer Relations, and Repetitive Behaviors) were extracted by exploratory factor analysis of control group data. Confirmatory factor analysis revealed that the 4-factor model fit well with data for another sample of the control and ASD groups. Logistic analysis showed that the former 3 factors could significantly predict ASD diagnosis. Thus, a short form of the ASSQ was developed, consisting of 11 items for these 3 factors. This short form showed sufficient internal consistency and high discrimination power for ASD diagnosis that was comparable to that of the 22-item version. Receiver operating characteristic analysis indicated an optimal cut-off of 7 for the 22-item version (sensitivity .949, specificity .801) and 5 for the short-form (sensitivity .936, specificity .818).
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ito
authors.forename: Kaori
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Nobuya
authors.initials: N
authors.lastname: Takayanagi
authors.forename: Shin
authors.initials: S
authors.lastname: Harada
authors.forename: Satoko
authors.initials: S
authors.lastname: Ohtake
authors.forename: Naoto
authors.initials: N
authors.lastname: Mochizuki
authors.forename: Syunji
authors.initials: S
authors.lastname: Nakajima
authors.forename: Wataru
authors.initials: W
authors.lastname: Noda
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Tsujii
mesh_terms: D000293:Adolescent; D044466:Asian People; D002648:Child; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics; D011795:Surveys and Questionnaires / Q000592:standards*