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Ann Child Neurol > Volume 22(1); 2014 > Article
Journal of the Korean Child Neurology Society 2014;22(1):1-11.
DOI: https://doi.org/10.26815/jkcns.2014.22.1.1    Published online March 30, 2014.
The Validity of Korean Ages and Stages Questionnaires (K-ASQ) in Korean Infants and Children.
Hee Jung Chung, Baik Lin Eun, Hyun Sik Kim, Jin Kyung Kim, Son Moon Shin, Ji Hoon Lee, Jieun Choi, Young Ah Kim, Kyung Ja Oh
1Department of Pediatrics, National Health Insurance Service, Ilsan Hospital, Goyang, Kyunggido, Korea.
2Department of Pediatrics, Korea University, College of medicine, Seoul, Korea. bleun@korea.ac.kr
3Department of Psychology, Yonsei University, Seoul, Korea.
4Department of Pediatrics, Deagu Catholic University, College of medicine, Korea.
5Department of Pediatrics, Kwandong University, College of medicine, Korea.
6Department of Pediatrics, Sungkyunkwan University, College of medicine, Seoul, Korea.
7Department of Pediatrics, Seoul National University, College of medicine, Boramae Hospital, Seoul, Korea.
8Huno Human Behavior Research Institute, Yonsei University, Seoul, Korea.
As a preliminary study on the development of a new developmental screening tool, this study examined the validity of the Korean Ages and Stages Questionnaires (K-ASQ). METHODS: The clinical sample included a total of 218 Infants and children at 30, 36, 60 months of age, who were diagnosed with developmental disorders. Age- and sex-matched normal controls were selected from a national large-scale K-ASQ database. Sensitivity, specificity, and accuracy were calculated in different age and diagnosis groups, and receiver operating characteristic (ROC) curve analysis was performed as well. In addition, concurrent validity was analyzed for the clinical sample by comparing the K-ASQ with other reference scales. RESULTS: The sensitivity, specificity, and accuracy of the K-ASQ were above fair (0.82-0.96) overall, however they varied depending on age and diagnosis groups. Specifically, the sensitivity at 60 months was relatively low (0.65). Especially, the discrimination sensitivity for the language delay group was poor at 60 months (0.42). ROC analysis showed that the overall discrimination capacity was above fair in all 5 domains [area under the curve (AUC): 0.74-0.98]. However, there were some domains and age groups with relatively poor discrimination capacity. In terms of concurrent validity, the correlations between the K-ASQ domains and reference scale subscales were statistically significant overall, but weak in some domains. CONCLUSION: The overall discrimination capacity and concurrent validity of the K-ASQ were above fair, but there were some domains, age, and diagnosis groups in which the K-ASQ was not successful in identifying potentially developmentally challenged children. These findings suggested the need for the development of a new developmental screening test tool, which is suitable for Korean infants & children.
Key Words: Developmental screening test, Korean Ages and Stages Questionnaires, Validity


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