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Examination of the Korean Modified Checklist of Autism in Toddlers: Item Response Theory
- Examination of the Korean Modified Checklist of Autism in Toddlers: Item Response Theory
- Seung, HyeKyeung; Ji, Juye; Kim, Soo-Jin; Sung, Inkyung; Youn, Young-Ah; Hong, Gyunghun; Lee, Hyeonjin; Lee, Young Hwan; Lee, Hyunsuk; Youm, Hyun Kyung
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
- 0162-3257; 1573-3432
- vol. 45, no. 9, pp. 2744 - 2757
- ASD screening; Korean M-CHAT; Item response theory; Population screening
- SPRINGER/PLENUM PUBLISHERS
- SSCI; SCOPUS
- The study examined the clinical utility and psychometric properties of the Korean Modified Checklist of Autism in Toddlers (K-M-CHAT)-2. A sample of 2300 parents of 16- to 36-month-old children was recruited across South Korea. A phone interview was utilized to follow up with participants who initially screened positive for autism spectrum disorder (ASD). Item response theory was applied to assess the psychometric properties of the K-M-CHAT-2. Parents' responses were substantially changed after the follow-up, and the final screen-positive rate was 2.3 %. Results indicated that the psychometric properties of items 1, 3, 11, 18 and 22 were not as strong as the other items. The K-M-CHAT-2 is a useful ASD screening test when implemented with a follow-up.
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