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Korean J Pediatr 2016 December;59(12) :483-489.
Published online 2016 December 15.       
Single-center experience of the Korean-Developmental Screening Test for infants and children
Chae-Ri Suh1, Su Ye Sohn2, Gun-Ha Kim1, Seong-Kwan Jung2, Baik-Lin Eun1
1Department of Pediatrics, Korea University College of Medicine, Seoul, Korea
2Woorisoa Childrens Hospital, Seoul, Korea
Corresponding Author: Baik-Lin Eun ,Tel: +82-2-2626-1229, Fax: +82-31-405-1224, Email:
Copyright © 2016 by The Korean Pediatric Society
Purpose: We investigated the number of test takers of the Korean-Developmental Screening Test (K-DST) in a single childrens hospital within a year, according to age, referral rate, and follow-up percentage.
Methods: For this study, 4,062 children who visited and received K-DST at Woorisoa Childrens Hospital between January and December 2015 were enrolled. Seven test sets were used according to the Korean National Health Screening Program for infants and children in the following age groups: 4 to 6, 9 to 12, 18 to 24, 30 to 36, 42 to 48, 54 to 60, and 66 to 71 months. The results of the K-DST were categorized into 4 groups as follows: further evaluation (<−2 standard deviation [−2SD]), follow-up test (−2SD to −1SD), peer level (−1SD to 1SD), and high level (>1SD).
Results: The test participants population and follow-up population were concentrated before the age of 24 months (2,532, 62.3%). The children most commonly referred for further evaluation were those in the 30- to 41-month age group. A mismatch was found between the results of the K-DST and the additional questions. Most of the infants and children with suspicious developmental delays showed catch-up development in their follow-up tests (43 of 55, 78.2%).
Conclusion: The use of K-DST should be encouraged, especially among children aged over 24 months. Multiple-choice question format for the additional questions is recommended to avoid confusion. We suggest a nationwide study to evaluate and revise the K-DST.
Keywords: Screening tests | Development | Infant | Child | Korea
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