• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.22 no.2
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• pp.120-127
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• 2011

Objectives:The purpose of this study was to verify discriminant validity and the clinical cutoff score of Child Behavior Checklist 1.5-5 in the diagnosis of developmental delayed infants. Methods:The participants were screened by Denver II which includes 156 developmental delayed infants and 288 normal infants. Chi-squared test, t-test, ROC curve analysis, odds ratio analysis were performed on the data. Results:Only 47 items out of 99 items among the CBCL 1.5-5 of total groups, 36 items of boys and 48 items of girls, discriminated developmental delayed infants well. Discriminant validity was confirmed by mean differences on the subscales of Withdrawn, Sleep Problems, Attention Problems, Internalizing Problems, Externalizing Problems, Total Problems, DSM Pervasive Developmental Problems and DSM Attention Deficit/Hyperactivity Problems between the two groups. Additionally, ROC analyses demonstrated that Withdrawn, Attention Problems, Internalizing Problems, Total Behavior Problems and DSM Pervasive Developmental Problems significantly predicted developmental delayed infants compared to normal infants. Also, the clinical cutoff score criteria adopted in the Korean CBCL 1.5-5 for subscales of Withdrawn, Attention Problems, Internalizing Problems, Total Behavior Problems and DSM Pervasive Developmental Problems were shown to be valid. Conclusion:The subscales of Withdrawn, Attention Problems, Internalising Problems, Total Behavior Problems and DSM Pervasive Developmental Problems significantly discriminated in the diagnosis of developmental delayed infants well.

• The Journal of the Korea Contents Association
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• v.11 no.4
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• pp.290-302
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• 2011

The purpose of this research was to investigate the effects of vestibule-oriented sensory integration treatment on the nystagmus, visual perception and balancing ability of children with developmental disability. Twenty three children with developmental disability were participated in this experiment. Subjects were received the vestibule-oriented sensory integration treatment based on Ayres' sensory integration theory for 12 weeks. The effects of the treatment were evaluated by Southern California Postrotary Nystagmus Test (SCPNT), Developmental Test of Visual Perception-2 (DTVP-2), Pediatric-Clinical Test of Sensory Integration Balance (P-CTSIB), South California Sensory Integration Test (SCSIT) and the selected item in Bruininks-Oeretsky Test of motor proficiency (BOT). The collected data were analyzed by using Wilcoxon test. The result of this study was as follows that the data of the Nystagmus shown statical significant. The data of the Visual Perception and Balancing ability shown statical significant. The proposed vestibule-oriented sensory integration treatment was effective to improvement of nystagmus, the visual perception and the balancing ability in children with Developmenantal Disability.

• Clinical and Experimental Pediatrics
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• v.60 no.10
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• pp.312-319
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• 2017

Purpose: To evaluate the usefulness of the Korean Developmental Screening Test (K-DST) for infants and children for developmental delay assessment. Methods: This study was based on retrospective studies of the results of the K-DST, Preschool Receptive-Expressive Language Scale (PRES), Sequenced Language Scale for Infants (SELSI), Childhood Autism Rating Scale (CARS), Modified Checklist for Autism in Toddlers (M-CHAT), electroencephalography, magnetic resonance imaging, and extensive tests conducted in 209 of 1,403 patients, of whom 758 underwent the K-DST at the Korea University Guro Hospital between January 2015 and December 2016 and 645 were referred from local clinics between January 2015 and June 2016. Results: Based on the K-DST results, the male children significantly more frequently required further or follow-up examination than the female children in most test sections, except for gross motor. The male children had notably lower mean scores than the female children. The PRES/SELSI results showed that when more further or follow-up evaluations were required in the K-DST communication section, significantly more problems in language delay or disorder emerged. When further or follow-up evaluation was required in the cognitive section in the CARS/M-CHAT, the possibility of autism increased significantly. A child tended to score low in the CARS test and show autism when further or follow-up evaluation was recommended in the K-DST. Conclusion: This study demonstrated the usefulness of the K-DST as a screening test early in the development of infants and children in Korea. Data of normal control groups should be examined to determine the accuracy of this investigation.

• International Journal of Aeronautical and Space Sciences
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• v.11 no.4
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• pp.313-318
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• 2010

The power plant system of a tilt rotor unmanned aerial vehicle (UAV) was verified by the Ironbird ground test, which considerably reduces cost and risk during the developmental stages. The function and performance of the engine, drive line, nacelle conversion, and rotor systems were evaluated using a building block test approach. The Ironbird test concept facilitates the discovery of potential faults in earlier stages of the testing period. As a result, the developmental testing period could effectively be shortened. The measured test data acquired through a ground control and data acquisition system exhibited satisfactory results which meet the developmental specifications of a tilt rotor UAV.

• Clinical and Experimental Pediatrics
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• v.62 no.5
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• pp.187-192
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• 2019

Purpose: The importance of the neurodevelopmental outcomes of very-low-birth-weight (VLBW) infants has been emphasized as their mortality rate has markedly improved. This study aimed to assess the validity of the Korean Developmental Screening Test (K-DST), a developmental screening tool approved by the Korean Society of Pediatrics, for the timely diagnosis of neurodevelopmental delay in VLBW infants. Methods: Subjects included VLBW infants enrolled in the Korean Neonatal Network database between January 2012 and December 2014. The collected data were analyzed for sensitivity, specificity, positive predictive value, and negative predictive value (NPV) in the K-DST compared to those in the Bayley Scales of Infant Development-II for VLBW infants. Results: A total of 173 patients were enrolled. Their mean gestational age and mean birth weight were $27.5{\pm}2.8weeks$ and $980.5{\pm}272.1g$, respectively. The frequency of failed psychomotor developmental index (PDI) <85 was similar to that in at least one domain of K-DST <1 standard deviation. Failure in more than one K-DST domain compared with a mental developmental index (MDI) <85 showed a sensitivity and NPV of 73.2% and 75.0%, respectively. Failure in more than one K-DST domain compared with PDI <85 showed a sensitivity and NPV of 60.3% and 71.6%, respectively. Each K-DST domain had a stronger correlation with predicting a failing MDI <85 than a failing PDI <85 (P<0.05). Conclusion: K-DST could be a useful screening tool for predicting mental developmental delay in VLBW infants and referring them for neurodevelopmental assessments.

• Imaging Science in Dentistry
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• v.44 no.3
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• pp.185-191
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• 2014

Purpose: This study investigated the developmental stages of third molars in relation to chronological age and compared third molar development according to location and gender. Materials and Methods: A retrospective analysis of panoramic radiographs of 2490 patients aged between 6 and 24 years was conducted, and the developmental stages of the third molars were evaluated using the modified Demirjian's classification. The mean age, standard deviation, minimal and maximal age, and percentile distributions were recorded for each stage of development. A Mann-Whitney U test was performed to test the developmental differences in the third molars between the maxillary and mandibular arches and between genders. A linear regression analysis was used for assessing the correlation between the third molar development and chronological age. Results: The developmental stages of the third molars were more advanced in the maxillary arch than the mandibular arch. Males reached the developmental stages earlier than females. The average age of the initial mineralization of the third molars was 8.57 years, and the average age at apex closure was 21.96 years. The mean age of crown completion was 14.52 and 15.04 years for the maxillary and the mandibular third molars, respectively. Conclusion: The developmental stages of the third molars clearly showed a strong correlation with age. The third molars developed earlier in the upper arch than the lower arch; further, they developed earlier in males than in females.

• Korean Journal of Human Ecology
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• v.16 no.6
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• pp.1069-1082
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• 2007

The purpose of this study is to examine how integrative art therapy affected the interaction of children with developmental disorder with their mothers from the viewpoint of object-relation theory that accentuated mother role for the promotion of mother-child interaction, and based on earlier studies on mother-child interaction and the interaction of children with developmental disorder with their mothers. The subjects in this study are five selected children and their mothers who used B and G social welfare agencies in Gyeonggi province. They are at the age of five and six in Western age, and have difficulties interacting with their parents. When a social maturity test is conducted, their social age ranged from 2.1 to 3.9, and as Portage Test is implemented, their developmental levels of sociability, cognition and language were identical to those of younger children who were at the age of one to 3.5. The major findings of the study are as follows. First, the children who suffered from developmental disorder and participated in this study showed a positive change in their interaction with their mothers. Second, as for connections between each session and mother-child interaction, most of them came to interact with their mothers better as the program came to an end.

• The Journal of Korean Physical Therapy
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• v.27 no.4
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• pp.183-189
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• 2015

Purpose: The aim of this study was to examine the test-retest and inter-rater reliability of the pediatric functional muscle testing (PFMT) when applied to children with developmental delay. Methods: Sixteen children with developmental delay (seven females, nine males) participated in this study. For the inter-rater reliability, each was scored on the PMFT by two pediatric physical therapists with more than 8 years of clinical experience on the same day. For assessment of the test-retest reliability, one therapist tested the children again within 10 days. The second measurement was performed by taking a first measurement in video. Intraclass correlation coefficient (ICC) was calculated to determine the test-retest and inter-rater reliability of the PFMT, and Chronbach's alpha was used to measure internal consistency. Results: The results of this study were as follows: 1) The test-retest ICC of the score of the infant action month and the right side of the PFMT was from 0.53 to 1.00 and from 0.63 to 0.99, respectively. 2) The inter-rater ICC of the score of the infant action month and the right side of the PFMT was from 0.66 to 1.00 and from 0.64 to 1.00, respectively. 3) Chronbach's alpha was 0.93. The internal consistency indicated excellent. Conclusion: In conclusion, this study showed that the test-retest and inter-rater reliability of the PFMT was relatively high, except for a few items. Therefore, it can be suggested that the PFMT will be a useful tool for measurement of muscle strength for children with developmental delay if it be some modifications.

• The Journal of the Korea Contents Association
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• v.10 no.11
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• pp.275-284
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• 2010

The purpose of this study is to investigate the relationship between family environment and developmental delay in a sample of normal 3-5 years old children. Developmental evaluation is performed using K-DDST II and K-ASQ. Family environment is researched by survey. The survey questions include children's order, family numbers, religion, patient's age, patient's education history. Subject is selected between the age of 3-5 years old children. The test has been conducted to find an interrelationship between a developmental delayed result and family environment. Study has found that there is a strong relationship between developmental delay and children's family environment. Family environment factor includes children's gender, birth order, parent's age, education history. Therefore, developmental evaluation must have consideration on the element of children's family environment for developmental delay test because of a strong relationship between family environment and developmental delay result.

• Clinical and Experimental Pediatrics
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• v.45 no.6
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• pp.700-711
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• 2002

Purpose : Early identification and treatment of developmental disabilities is of considerable importance in the health care of children. Screening of development is aimed at identifying infants who may need more comprehensive evaluations. Methods : A new test, the Ewha Infant Development Screening Test(EDST) has been created to screen the development of infants, 0-4 years of age. EDST was constructed so that results can be calculated into developmental ages and developmental quotients. The test consists of three sectors, e.g. language, social-adaptive and motor, and of 158 test items. A total of 104 infants, aged from one month to four years, including healthy infants as well as 10 with chief complaints of developmental delay, who visited the pediatric clinic of Ewha Womans University Dongdaemun Hospital, from June, 25 to November 30, 2001, were given the Bayley Scale of Infant Development as a base test and EDST. Results : The result showed the appropriate cut-off of EDST was 90 with better sensitivity and specificity, compared to cut-offs of 85 or 80. Conclusion : Further study with a large number of infants in the future is needed to make EDST more reliable and accurate.