• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제26권3호
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• pp.217-225
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• 2015

Objectives : The objective of this study was to compare the Korean Personality Rating Scale for Children (K-PRC) profile between children with attention-deficit hyperactivity disorder (ADHD) and typically developing children. We also aimed to investigate the association of K-PRC and ADHD symptoms. Methods : Ninety-nine youth (age $8.3{\pm}2.4$ years, 72 boys) with ADHD and 84 controls (age $9.2{\pm}2.5$ years, 43 boys) were recruited from the Department of Pediatric Psychiatry of the Asan Medical Center Children's Hospital. Diagnoses of ADHD and comorbid psychiatric disorders were confirmed with the Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version (K-SADS-PL). The parents of the subjects completed the ADHD rating scale, and K-PRC. Independent t-tests, analysis of covariance, partial correlation analyses, and Mc Nemar test were used for analysis. Results : Children and adolescents with ADHD showed higher K-PRC scores in verbal development, physical development, depression, delinquency, hyperactivity, family dysfunction and psychoticism. Delinquency and hyperactivity were significantly correlated with parent-rated ADHD rating scales and ADHD scores on K-SADS-PL. The hyperactive/impulsive and combined subtypes showed higher scores on hyperactivity and delinquency than the inattentive subtype, and the inattentive subtype showed higher scores on depression and social dysfunction of the K-PRC. Conclusion : Our results suggest that K-PRC could be used to comprehensively evaluate symptoms, combined psychopathologies, developmental delay and family dysfunction of children with ADHD.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제22권4호
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• pp.246-252
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• 2011

Background : The objective of this study was to evaluate the diagnostic efficiency of the Comprehensive Attention Test (CAT) by comparing the results of the continuous performance test (CPT) and the CAT in children and adolescents with attention-deficit hyperactivity disorder (ADHD). Method : A total of 110 children and adolescents with ADHD (mean age : 11.2${\pm}$2.9 years, 76 boys) and 36 children and adolescents without ADHD (mean age : 12.0${\pm}$2.7 years, 25 boys) completed the CAT. We compared the specificity and sensitivity of the CPT and CAT at two different cut-off points via the McNemar test. The areas under the receiver operating characteristic curves (AUC) between the two groups were compared using Medcalc software. Results : The sensitivity and specificity of the CPT were .419 and .806, respectively. The sensitivity of the CAT was .827, which was significantly higher than that of the CPT (p<.001), and the specificity of CAT is .444, which was significantly lower than that of CPT (p<.001). The AUC of the CPT and CAT was .664 and .692, respectively, and there were no significant difference between the two groups on the paired comparison (p=.513). Conclusions : The results of this study suggest that the CAT has moderate specificity and high sensitivity. The CAT can be used as a useful tool to evaluate the neuropsychological function of children and adolescents with ADHD.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제21권1호
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• pp.37-44
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• 2010

Objectives ： The purpose of this study was to evaluate gender differences with respect to the internalization or externalization of symptoms according to the amount of time spent engaged in extracurricular education. Methods ： The study included a community sample of 755 boys and girls (mean age, 6.6 years), collected from five elementary schools in Gunpo, South Korea. Primary caregivers completed a questionnaire which included information on demographics, the amounts of time children spent in extracurricular education and with other activities, and an adapted form of the Behavior Assessment System for Children (BASC-2). Gender differences regarding externalizing and internalizing behavior problems were examined according to extracurricular education. Results ： With respect to the boys, there was a difference in the frequency of those who had externalizing behavior problems according to their time spent in extracurricular education. In contrast, the girls exhibited no difference. With respect to those children who spent a lot of time engaged in extracurricular education, there was a gender-specific difference only with respect to externalizing behavior problems. Conclusion ： A gender-specific difference exists only in terms of externalizing behavior problems according to time spent engaged in extracurricular education.

• Child Health Nursing Research
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• 제6권1호
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• pp.18-31
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• 2000

Recently, the number of obese people have been increasing due to westernized diets and increased sedentary activity. In particular, obese adolescent have been newly recognized as having significant health problems. This study focuses on determining the gender difference of obese adolescents through implementation of a structured questionnaire on general characteristics, attitudes toward dieting, eating habits and emotional depression due to obesity. Data collection was carried out by 291 students in attendance at 3 high schools in Pusan from 11. 2. 1998 to 11. 30. 1998. The targets were 148 boys and 143 girls who were judged as obese in the school's physical check-up. The test of reliability of this research was calculated by chronbach's α. Data analysis was managed by computer and statistics by SPSS/WIN. The results of the survey are as follows: 1. For the questionnaire regarding attitudes toward dieting which include 28 items, 10 out of 28 items (about 36%)showed gender difference. 2. For the questionnaire regarding eating habits which include 17 items, 5 out of 17 items (about 30%)showed gender difference. 3.For the questionnaire regarding emotional depression about obesity, 30.6% of boys and 27.3% girls answered but no statistical significance. The results of this survey indicated that this study will be important as a good guideline for treating obese adolescents. It is hoped that much more research on gender difference in obese adolescents will be implemented in the future. In addition, the development of effective treatments for obesity should be based on the gender of the adolescent.

• Korean Journal of Health Education and Promotion
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• 제3권1호
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• pp.113-128
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• 2001

The purpose of this study is to examine the prevalence and correlates of three types of risk-taking behavior among high school students in Korea in a cross-sectional national sample. A sample of 636 male and 622 female high school students is analyzed using descriptive statistics and logistic regression. Three types of risk-taking behavior are examined: drinking alcohol, smoking, and premarital sex. The results are as follows: Forty-three percent of students in the sample have ever drunk alcohol, 32% have ever smoked, 11% have experience premarital sex. Risk-taking behavior is more prevalent among boys than among girls. Boys and girls in Seoul are much more likely to have experienced three types of risk-taking behavior. Not having two parents in the family and having lived away from immediate family increase the likelihood of some risk-taking behavior. Students who have a friend with premarital sexual experience are much more likely to have experienced premarital sex themselves. Among sexually active students, having multiple sexual partners is common and prevalence of condom use is low. Reproductive health education at school has no effect on students' sexual behavior. The prevalence of risk-taking behavior among adolescent in Korea is likely to rise in the future. Substantial proportion of adolescents are exposed to the risks of STDs and substantial proportion of adolescent girls risk premarital pregnancy. Current health education programs are inadequate in protecting students from risk-taking behavior. Students whose families do not include both parents and students who live away from their immediate families need special programs to protect them from risk-taking behavior.

• 치위생과학회지
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• 제23권4호
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• pp.245-254
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• 2023

Background: This study aimed to determine the skeletal and dental effects in pediatric and adolescent Korean patients with Class II Division 1 malocclusion treated using the Invisalign Mandibular Advancement (MA^®) appliance. Methods: The study included patients aged 6 to 18 years who received orthodontic treatment with the MA^® appliance for Class II Division 1 malocclusion at the Department of Pediatric Dentistry, Wonkwnag University Daejeon Dental Hospital, between July 1, 2018, and December 31, 2021. The treatment group consisted of 20 patients, 10 boys and 10 girls. The control participants were also 10 boys and 10 girls. Lateral cephalometric radiographs were taken before and after treatment, and 41 measurements of skeletal and dental changes were measured and analyzed using the V-Ceph^TM 8.0 (Osstem Implant). All analyses were performed using SPSS software (IBM SPSS for Windows, ver 26.0; IBM Corp.), and statistical significance was tested using paired and independent samples t-tests for within-group and between-group comparisons, respectively. Results: The patients in the treatment group showed significant decreases in ANB (A point, Nasion, B point), maxillary protrusion, maxillary anterior incisor labial inclination, and maxillary protrusion after treatment. However, when compared with the growth changes observed in the control group, only ANB and maxillary protrusion decreased, with no significant differences in SNA, SNB, and mandibular length. Conclusion: Collectively, the results of this study confirm that the use of MA^® appliance in pediatric and adolescent Korean patients with Class II Division 1 malocclusion results in a reduction of anteroposterior skeletal and dental disharmony.

• 대한영양사협회학술지
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• 제18권1호
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• pp.1-15
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• 2012

The purpose of this study was to provide fundamental data for health promotion and improvement of the dietary life in students who receive school lunch support (SLS) by comparative analysis of food service satisfaction, dietary habits, and nutrition intakes according to SLS. The subjects of this study consisted of 258 boys and 233 girls at a middle school in Incheon. The students' average age was 14.9 years, average height was 161.3 cm, and average weight was 52.0 kg. The breakfast eating frequency of the No-SLS (NSLS) group was significantly greater than that of the SLS group (P<0.05). The time spent for eating breakfast in the SLS group was significantly shorter than that of the NSLS group for boys. There was no significant difference in dietary attitudes according to SLS. For satisfaction of the quantity and diversity of the school lunch menu in girls, the SLS group had higher satisfaction than the NSLS group. The daily energy intake of the SLS group was significantly lower than that of the NSLS group in both boys and girls. The majority of daily nutrients intakes in the SLS group were also significantly lower than those in the NSLS group. In summary, the female students in the SLS group were more satisfied with school lunch service than general students. However, SLS students less frequently ate breakfast and showed lower energy and nutrient intakes. Therefore, in order to improve the nutritional status and dietary life of students who receive school lunch support, consistent nutrition management and support in schools are required.

• 한국학교보건학회지
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• 제31권2호
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• pp.79-87
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• 2018

Purpose: The purpose of this study was to investigate the relationship between the risk of school bullying victimization and the risk of Internet gaming disorder according to gender in adolescents. Methods: The data of 1,920 middle school students collected at the baseline of the Internet user Cohort for Unbiased Recognition of gaming disorder in Early Adolescence (iCURE) study were analyzed. For statistical analysis, $x^2$ test, t-test and stratified multiple logistic regression analysis were conducted using SAS 9.4. Results: The prevalence rate of Internet gaming disorder of middle school boys was greater than that of girls (Boys: 9.9%, Girls: 6.2%). The greater the risk of school bullying victimization, the greater both the risk of Internet gaming disorder and the average daily time spent on Internet gaming. In girls, the relationship between the experience of being bullied in school and Internet gaming disorder was not statistically significant. However, the boys who had been bullied in school were 3.2 times more vulnerable to the risk of Internet gaming disorder than those without such experience (95% CI: 1.135-8.779). Conclusions: When considering interventions for Internet gaming disorder for adolescents, bullying victimization should be taken into account as well. Particularly, relieving stress related to bullying victimization can be important for boys with Internet gaming disorder.

• 대한지역사회영양학회지
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• 제3권2호
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• pp.190-201
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• 1998

This study was carried out with 505(243 boys and 262 girls in the Sungnam area) high school students to investigate the effects of eating behavior and anthropometric variables of weight and height on excercise performance. General characteristics about subjects and eating behavior were surveyed by questionnaire, anthropometric data were collected using two methods. The weight and height of subjects in 1996 were measured, but the same data in 1995 were collected from health records of each student. Body fat content of subjects was measured by BIA(Body Impedance Analysis). The grades of exercise performance, which were evaluated by physical education teachers were collected from records of a physical strength test score of each subject. From these, the following result were found. Groups with different eating behaviors such as skipping meals, overeating, food preference for a specific food(milk, carbonated drink etc.) were significantly different in their weight and height and body fat contents. The growth rate of height in first and second grade boys was significantly higher than that for grade boys. The amount of weight gain from second grade to third grade was significantly more than that of other grades both for boys and girls. The mean of BMI was $21.66\pm{2.95}$ in boy, $21.50\pm{2.62}$ in girls. The percentage of body fat was $24.91\pm{6.55%}$ in boy $34.73\pm{4.88%}$ in girls. Amounts of body fat were significantly increased in third grade. The group with higher fat content and the higher BMI group had lower values of physical strength. And the ability to exercises perform decreased significantly by promotion of grade. The other variables such as degree of concern about weight control and preference of exercise, and frequencies of exercise per week were significant factors in body fat content and physical strength. As a countermeasure for these problems, nutrition and health education must be developed for adolescents and a practical, proper physical activity guidance campaign for them is necessary.

• Clinical and Experimental Pediatrics
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• 제61권4호
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• pp.121-128
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• 2018

Purpose: Obesity has been associated with higher total blood mercury levels, based on animal studies; however, studies that focus on children and adolescents are lacking. We aimed to assess the association between total blood mercury levels and the incidence of overweight and abdominal obesity in Korean adolescents. Methods: The study population comprised 1,567 adolescents (793 boys and 774 girls; aged 10-19 years), who participated in the Korea National Health and Nutrition Examination Survey 2010-2013. We analyzed total blood mercury levels according to obesity status in all participants. Results: The geometric mean of total blood mercury levels was $1.93{\mu}g/L$. Participants with overweight ($2.20{\mu}g/L$) and obesity ($2.17{\mu}g/L$) had higher levels than those with normal weight ($1.86{\mu}g/L$, P<0.0001). The prevalence of overweight significantly increased with elevation of the total blood mercury quartile in both sexes. Increased incidence of abdominal obesity corresponding to increased total blood mercury level was observed in boys. After adjusting for covariates, those in the highest total blood mercury quartile were found to be at higher risk of overweight/obesity than those in the lowest quartile in both sexes (odds ratio [95% confidence interval]: boys, 3.27 [1.66-6.41]; girls, 1.90 [1.03-3.49]). The association between total blood mercury quartile and abdominal obesity was significant after controlling for covariates in boys (2.35 [1.05-5.24]). Conclusion: Our results suggest an association between total blood mercury levels and overweight in Korean adolescents.