• Korean Journal of Child Studies
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• v.23 no.3
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• pp.35-49
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• 2002

This study examined the developmental characteristics of friends and disliked peers in 169 children and adolescents, including 44 preschool children, 43 primary school, 42 middle school, and 40 university students. Their descriptions of 2 same gender friends and 2 disliked same gender peers were categorized with an 81 category coding system. Comparisons across age and sex were made by a cross-tabulation test. Results showed that the reported characteristics of friends and disliked peers varied by age, but there was no sex difference. That is, younger children liked their friends because they played together, their friends were generous and attractive, but older children liked friends because they had some similarity, were reliable allies, caring and concerned. Younger children's disliked peers were aversive, aggressive and hyperactive while older children's disliked peers were dissimilar and snobbish.

• Korean Journal of Child Studies
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• v.22 no.2
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• pp.133-147
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• 2001

This study examined whether the ego-identities of institutionalized children and adolescents differ by grade, gender, reason for and length of residence, age at entering the institution, parents' visiting, relationship with parents before entering the institution, and caretakers' emotional support. We assumed that the ego-identities of institutionalized children had an effect on social interactions. The subjects were 121 5th and 6th graders, 135 middle, and 85 high school students who were institutionalized in Seoul. As predicted, the ego-identities of institutionalized children and adolescents differed by grade, and by such social interactions as parents' visiting, relationship with parents before entering the institution, and caretakers' emotional support. Results support the importance of social interactions for understanding the ego-identities of institutionalized children and adolescents.

• Journal of Oral Medicine and Pain
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• v.48 no.3
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• pp.75-80
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• 2023

Temporomandibular disorders (TMDs) are a group of musculoskeletal disorders that encompass symptoms caused by abnormalities of the craniofacial structures of the temporomandibular joint (TMJ), muscles involved in the masticatory system, and other related tissues or structures. Although TMDs can occur at any age, research on the prevalence, epidemiology, and treatment strategies of TMDs has been conducted in all age groups, but primarily in adults. Unlike adults, children and adolescents are in a period of cognitive and physical development. Because of this growth potential, children respond better to TMD treatment than adults do. However, clinicians must remember that chronic pain and growth abnormalities can occur if the patient's symptoms and signs are not accurately diagnosed and treated. This article reviews the growth and development of the craniofacial region, including the TMJ, and discusses considerations when diagnosing and treating TMDs in children and adolescents.

• Journal of Nutrition and Health
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• v.37 no.2
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• pp.143-152
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• 2004

A dietary survey was conducted using 24-hour recall method in 80 male elementary school children, 83 high school students, 87 adults and 98 elderly people over 65 years of age to discuss food and nutrient intakes among different age groups. In observing food intake by age groups, the percentage of plant foods to total food intake was significantly higher in the elderly than other groups and that of animal foods was the highest in the children. The children consumed significantly higher amounts of milk and dairy products. Carbohydrate energy percent in the elderly people was 68.0%, significantly higher than other age groups. All age groups consumed Ca below Korean RDA and especially, 65.1% of the adolescents and 68.4% of the elderly consumed below 75% of RDA. Nutrient adequacy ratio (NAR) of most nutrients was lowest in the elderly. Mean adequacy ratio (MAR), an index of overall dietary quality, was 0.94 for the children, 0.84 for the adolescents, 0.84 for the adults, and 0.73 for the elderly. The above results suggest that food and nutrient intakes have been differently affected with advancing age, and overall dietary quality of the elderly people is lower than that of other age groups. (Korean J Nutrition 37(2): 143-152, 2004)

• Journal of Families and Better Life
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• v.29 no.5
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• pp.85-105
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• 2011

The purpose of this study was to investigate the variables on adolescents' perception of parents and children's relationship. Independent variables were the expectation of the parents' role, role performance by adolescents' perception and socio-demographic variables. In order to achieve this purpose, the survey was taken by 758 adolescents (middle & high school students) from Daegu. The data were analyzed by frequency, percentage, mean, Factor Analysis, Cronbach's ${\alpha}$, Pearson's correlation coefficient, Multivariate Analysis of Variance, Scheffe test for post hoc, and Multiple Regression. The major findings were: 1) Role expectation had significant differences in the grade, gender, birth order, father's level of education, father's job, mother's age, and household economy of socio-demographic variables. Role performance showed significant differences in the grade, gender, father's age, parents' level of education, father's job, and household economy of socio-demographic variables. 2) Adolescents' perception of parents and children's relationship was affected by role expectation and role performance.

• Environmental Analysis Health and Toxicology
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• v.28
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• pp.18.1-18.8
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• 2013

Objectives As public concern on possible harmful effects of mobile phone in children has been raised, information of epidemiological characteristics of mobile phone use in children and adolescents will be essential for public health policy. Methods Using three databases (n=21,693) collected from 2008 to 2011, we examined characteristics of mobile phone ownership and use, and socioeconomic positions (SEP) in Korean children and adolescents. Results The ownership rate and the amount of mobile phone use were higher in females than males, in higher school grades than lower grades, and at 2011 than 2008. The average age of first mobile phone ownership was shown to decrease from 12.5 years in currently high school students to 8.4 years in currently elementary school students at 2011. More than 90% of children in the 5th grade owned a mobile phone. More children owned a mobile phone in lower SEP communities than in higher SEP. Children with parents educated less than those with parents educated more were more likely to own and use mobile phone. Conclusions Considering the epidemiological characteristics of mobile phone use, precautionary measures to prevent unnecessary exposure to mobile phones are needed in children and adolescents.

• The Journal of Korean Society for School & Community Health Education
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• v.13 no.1
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• pp.1-12
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• 2012

Backgrounds: Burn of children and adolescents is an accident due to careless protector in many case. All the pediatric burns are preventable. We investigated the characteristics of pediatric burns. Such data can propose proper health educational program designs to suit the community. Purpose: This study aims to analyse the characteristics of pediatric burn patients and to discusses a possible prevention program for this population. Methods: The subjects were 77 patients reviewed burn injury in pediatric under 15 years old. Data were burn center of the B General Hospital from January 1 to December 31 2009 and a retrospective epidemiological study was collecting medical records. Results: seventy-seven children and adolescents with burn were admission treated for Burns and they were 54.5% boys and 45.5% girls. An incidence of age group with pediatric burn was less than one year of age(46.8%), 2-3 year(27.3%), 4~7year(10.4%), over 8 years old(15.6). Length of stay hospitalization was 1~2 week(32.9%) highest percentage and second-degree deep burns were 41.6% the highest percentage. Divided by the age of about 3, length of stay, ICU status, time of injury onset, cause, indication, place of accident, treatment, degree, region of burns had a statistically significant difference. Conclusion: Less than one year of age was the highest percentage. Divided by the age of about 3, Characteristics and factors affecting the range of burn were significant. Education and guide are necessary to reduce incidence of pediatric burns.

• Korean Journal of Health Education and Promotion
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• v.33 no.2
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• pp.1-13
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• 2016

Objectives: This study was performed to investigate secular trends in height, weight, obesity among Korean children and adolescents in 2006-2015. Methods: The study participants were 1,249,698 children and adolescents 6-17 years in age who participated in health examinations for school students supervised by Korean Ministry of Education and conducted by the Korea Association of Health Promotion in 2006-2015. Height and weight were measured unified procedures at each period. Obesity was defined as being 95th percentile of sex-specific body mass index(BMI) for age in the 2007 Korean National Growth Charts or $BMI{\geq}25$. Results: Between 2006 and 2015, the median of height and weight, BMI of Korean children and adolescents has increased significantly. The overall prevalence of obesity was 10.7%(boys 12.6%, girls 8.7%). In 2012-2015, the prevalence of obesity 12.2%(boys 14.1%, girls 10.2%), compared to 9.1%(boys 10.9%, 7.2%) in 2006-2008. The increase in obesity prevalence was statistically significant(p<0.05). The prevalence was highest in Gyeonggi area, lowest in Chungcheong area when compared to other regions(p<0.001). Conclusions: During the period 2006-2015, growth trends, prevalence of obesity among Korean children and adolescents increased significantly. Health promotion and intervention programs promoting healthy growth and development of Korean children and adolescents were need consider the demographic and regional characteristics.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.23 no.3
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• pp.286-296
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• 2020

Purpose: Inflammatory bowel disease (IBD) in children and adolescents is associated with high morbidity and possibly has a significant negative impact on their quality of life. This study aimed to evaluate the quality of life of children and adolescents with IBD and define the variables that impact these individuals. Methods: We administered the Pediatric Quality of Life Questionnaire (PedsQL) to 35 children and adolescents diagnosed with IBD and with available quantitative data from clinical records on epidemiology, clinical evolution, complementary tests, medical interventions, and disease activity. Data were evaluated according to the IBD type and compared with a control group of healthy children. Results: The study group showed a significantly lower PedsQL score than the control group (p<0.01). Significant factors contributing to poor overall quality of life included female sex, Crohn's disease, surgery, and food restrictions. Symptoms such as diarrhea and the fear of using public toilets were associated with low physical scores. Feeling sick had a negative impact on the emotional PedsQL scores. Patients with a fear of using public toilets, anthropometric scores below the 3rd percentile, and greater disease activity scored lower in the social domain. Regarding school and psychosocial evaluations, younger children with symptom onset after the age of 2 years had lower scores than younger children with symptom onset before the age of 2 years. Conclusion: IBD negatively affects the quality of life of children and adolescents based on its impact on the physical, emotional, social, and psychosocial statuses of these patients.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.16 no.2
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• pp.80-88
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• 2013

Purpose: To identify the predictive factors of long-term therapeutic response or resistance to lamivudine treatment in children and adolescents with chronic hepatitis B. Methods: Eighty one children and adolescents with chronic hepatitis B were included, who received lamivudine treatment for at least 6 months. Their condition was monitored for at least 12 months (12-88 months) thereafter. Twenty one (25.9%) were preschool children ($age{\leq}6$). For patients who had developed HBeAg seroconversion or breakthrough, univariate and multivariate analyses were used to identify the effects of age, gender, pretreatment alanine aminotransferase (ALT) and hepatitis B virus DNA levels. Results: HBeAg seroconversion occurred in 49 (60.5%) of the 81 patients after the initiation of the lamivudine therapy. In 65 patients whom were monitored for over 24 months, the seroconversion rate was significantly higher in younger patients (p=0.040), especially in those patients of preschool age ($age{\leq}6$, p=0.031). The seroconversion rate was significantly higher in higher pretreatment ALT (p=0.003). The breakthrough occurred in 21 (25.9%) of the 81. The breakthrough rate was lower in younger aged patients ($age{\leq}6$), and with higher pretreatment ALT levels, but no significant difference. Conclusion: Younger age is a good predictor of HBeAg seroconversion in children with long-term lamivudine treatment as well as high pretreatment ALT levels.