• Clinical and Experimental Pediatrics
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• v.64 no.2
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• pp.86-92
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• 2021

Background: Anemia is an important health problem affecting approximately 25% of the global population. Although its prevalence is decreasing worldwide, few studies have examined the prevalence of anemia in Korean adolescents. Purpose: This study aimed to determine the prevalence of anemia in Korean adolescents over the past 21 years using data from the Korea National Health and Nutrition Examination Survey. Methods: We investigated the prevalence of anemia in adolescents aged 10-18 years for the period 1998-2018 according to sex, age, residential area, and household income. The effects of menarche age and menstruation were examined in female adolescents for the period 2001-2018. Results: Among the total 11,782 participants, the weighted prevalence of anemia was 4.0%. The prevalence of anemia in male participants significantly decreased (from 3.0% to 0.5%, P<0.001), whereas that in female participants did not change significantly over time (from 7.9% to 8.5%, P=0.054). The average age at menarche was 12.4±0.0 years; the prevalence of anemia in females increased from age 13 years onward. Multivariate analysis revealed that anemia was more common in female than male participants (odds ratio [OR], 9.88; 95% confidence interval [CI], 7.19-13.57; P<0.001). In female adolescents, the prevalence of anemia increased with age (OR, 1.26; 95% CI, 1.15-1.38, P<0.001) and was 3.6 times higher after than before menarche (OR, 3.65; 95% CI, 2.21-6.05, P<0.001). Conclusion: Over the 21-year study period, the prevalence of anemia decreased among male adolescents but did not change in female adolescents. In female adolescents, age and menarche were identified as significant risk factors that require continued attention.

• Journal of Korean Library and Information Science Society
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• v.52 no.3
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• pp.335-368
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• 2021

This study was performed in order to to suggest the library service direction and program provision method for single-person households in the Seoul Public Library. by analyzing the current status of the operation of public services and library services for domestic and foreign single-person households and the results of the survey on perception of library users and experts. As a result, the suggested library service direction for single-person households was proposed to secure and provide information resources closely related to the lives of single-person households, and establish a support center in charge of services to utilize human resources efficiently with local libraries, and create a user-centered facility infrastructure including single-person households away from the material-oriented library, provide regional specifications and customised services based on the characteristics and distribution of single-person households. In addition, the reading culture program for single-person households believes that social activities support for vulnerable single-person households, social ties, care, volunteer work, leisure and cultural activities are more necessary than anything else, and proposed specialized library services and programs for young, middle-aged, and female single-person households.

• Membrane Journal
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• v.29 no.2
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• pp.96-104
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• 2019

The purpose of this paper is whether or not the in-situ restoration of the reverse osmosis (RO) membranes which its membrane function is lost is possible. The damaged RO membranes are double coated through the salting-out method by the poly(styrene sulfonic acid) sodium salt as the cationic exchange polymer and the polyethyleneimine as the anionic exchange polymer and also conducted the opposite order of the coating materials. And according to the concentration, time and ionic strength, the flux and rejection are measured for the coated membranes. Then the best coating condition is to apply for the RO membrane module of the household water purifier to know the possibility of the in-situ restoration for the commercial module. When the condition of the PEI 30,000 ppm (IS = 0.1)/PSSA 20,000 ppm (IS = 0.7) is applied, the rejection was enhance from 69% for the damaged module to 86% (90% for the pristine module).

• Journal of dental hygiene science
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• v.19 no.3
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• pp.205-212
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• 2019

Background: Sleep disorder is a precursor to depression, which is one of the psychological factors associated with periodontal disease that, in turn, affects general and periodontal health. This study aimed to investigate the relationship between sleep duration, depression, and periodontitis in older people aged over 65 years. Methods: A total of 2,002 older adults aged 65 years or older were included in the study. Their general and health aspects, including smoking, drinking, diabetes, hypertension, and depression, were investigated. Periodontitis was examined using the Community Periodontal Index (CPI). Data were analyzed through a complex sampling design method. Frequency and crossover analyses were conducted to investigate the relationship between depression and periodontitis. To investigate the effect of depression on periodontitis, a logistic regression analysis was performed. Results: Regarding depression and participants' general characteristics, statistically significant differences were found in sex, economic activity, smoking habit, and CPI (p<0.05). In the presence of depression, the odds ratio for periodontitis was 1.84, and the adjusted odds ratio for age, sex, economic activity, residence type, household income, education level, smoking habit, drinking, hypertension, and diabetes was 1.72, representing a significant difference (p<0.05). Conclusion: This study examined the relationship between depression and periodontitis in older persons and confirmed a significant correlation. As the population of older adults increases, we should pay attention to their mental and oral health as well as systemic diseases. Various programs for the health promotion of older persons need to be implemented to improve the quality of life of older people.

• Korea Journal of Hospital Management
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• v.24 no.1
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• pp.48-56
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• 2019

Purpose: As an interest in the elderly medical expenses increases, elderly people are increasingly purchasing indemnity private health insurance. Authors tried to investigate factors of having the indemnity private health insurance among the elderly people aged 65-75 years. Methods: We conducted panel logit regression analysis on 2,465 subjects as of 2016 using Korean Health Panel from 2010 to 2016. The dependent variable was whether to enroll in the indemnity private health insurance. The explanatory variables included socio-demographic characteristics, economic factors, health status, and health behaviors. Findings: As a result of the analysis of factors of purchasing indemnity private health insurances, it was analyzed that people with larger family, educated, pensioner, high household income or no disability were more likely to have indemnity private health insurance. Practical Implications: Considering the results of this study, the factor of purchasing indemnity private health insurance among elderly people were more likely to be their economic than demographic characteristics such as sex, age, and marital status. Policy makers should make efforts to reduce the burden on the elderly medical expense and to improve equity of medical use through institutional improvement such as raising age limit and lowering premium of indemnity private health insurance and expansion of public health insurance.

• Journal of Korean society of Dental Hygiene
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• v.19 no.1
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• pp.117-129
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• 2019

Objectives: The purpose of this study was to investigate the influence of demographic characteristics and oral health status on unmet dental needs among preschool children and to provide a basis for improvement of the dental care equality and accessibility using data from the $6^{th}$ National Health and Nutrition Survey. Methods: This study was performed using data collected from the $6^{th}$ National Health and Nutrition Survey. The subjects were 1,472 out of 22,940 people, who participated in the survey and under went oral examination. IBM SPSS Statistics (Version 20.0) was used for statistical analyses based on the complex sampling design. Frequency analysis was performed to determine the distribution of unmet dental needs according to the characteristics of the subjects. The Rao-Scott ${\chi}^2$ test was performed to examine the relationship of unmet dental needs with general characteristics and health- and oral health-related variables. Relevant factors were determined using binary logistic regression analysis. Results: The factors that had statistically significant relations with unmet dental needs included age, medical insurance, household income, limited physical activity, history of dental caries in deciduous teeth, and subjective health status. Logistic regression analysis of complex samples was conducted to determine factors related to unmet dental needs. The results of analysis showed that limited physical activity and history of dental caries in deciduous teeth were related to unmet dental needs. Conclusions: The results show the factors affecting, and the reasons for, the unmet dental needs of preschool children. Future studies are needed to develop national projects and oral health education reforms to address inequalities in preschool children's dental care.

• The Journal of the Korea Contents Association
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• v.19 no.5
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• pp.542-552
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• 2019

This study aimed to analyze characteristics of employment and factors affecting of employment of person with Brain disorder. Participants were 317 individuals with brain disorders. Data were analyzed using Chi-square test, regression analyses. according to the Panel Survey of Employment for the Disabled in Korea. These factors were classified into disability and health factors, employment related factors, and household related factors. First, The employment group showed significantly severe disorder, higher health status, absent of daily life helper, absent of assistive devices, higher level education, licenses, public employment service, job arrangement of acquaintance, find a job oneself, married, absent of basic living security assistance, greater supports of family compared to the unemployed group. Second, Factors affecting employment of individuals with brain disorders included daily life helper, education level, job arrangement of acquaintance, married, basic living security assistance. Base on these results, developing dailylife and education system and social supported system and modifying the benefit system can promote employment acquisition of individuals with brain disorder.

• Journal of the Korea Convergence Society
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• v.10 no.5
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• pp.157-163
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• 2019

This study empirically investigates the double jeopardy phenomenon in a Korean and a New Zealand context. The double jeopardy is that companies with a small market share tend to suffer not only smaller sales volumes but also suffer a lower price than the market leader. The research reported here analyses price and market share data for 14 categories of household goods in Korea and a smaller number in New Zealand. Analysis shows that, in Korea, leading brands do enjoy a price premium as predicted, of around 15%, but that there is little or no evidence of double jeopardy occurring in New Zealand. Based on this study, evidence suggests that market share is a strong valid strategic objective in the East.

• Health Policy and Management
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• v.31 no.3
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• pp.292-300
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• 2021

Background: Medication adherence in hypertension is the most important to control blood pressure and prevent major complications. The purpose of this study was to identify factors affecting medication adherence and to examine the relationship between medication adherence and blood pressure control in Korea. Methods: This study used data from the 7th Korea national health and nutrition examination survey (2016-2018) of the Korea Disease Control and Prevention Agency. We selected 4,063 hypertensive patients from the data. And we choose socio-demographic, health behavior, healthcare utilization, and severity characteristics as hypertensive patient characteristics. Results: Of the patients with hypertension, 92.3% had shown adherence to medication as of 2016-2018 and shows variation according to the characteristic of patients. The cases with male, under 50 years old, urban area, single household, unmet medical services, less than 5 years of hypertension duration, no comorbidities (diabetes mellitus, myocardial infarction) showed significantly low medication adherence. After adjusting for confounders, adherent patients tended to have lower current systolic blood pressure (β=-10.846, p<0.001) and diastolic blood pressure (β=-5.018, p<0.001) than nonadherent patients. And, adherent patients increased the control odds of blood pressure compared with nonadherent patients (odds ratio, 3.02; 95% confidence interval, 2.21-4.12). Conclusion: This study confirmed that adherence to antihypertensive drugs was effective in controlling blood pressure. In order to more actively manage hypertensive patients at the national level, it is necessary to make an effort to improve the medication compliance of nonadherent groups, such as early-diagnosis patients, young patients under 50 years of age, and patients living alone.

• Journal of The Korean Society of Integrative Medicine
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• v.9 no.4
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• pp.1-9
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• 2021

Purpose : The purpose of this study was to investigate functional disability for the elderly in rural Korea and to identify influencing factors of functional disability. Methods : The data were collected for 76 community-dwelling elderly in rural area and above 65 years. We assessed cognitive function, functional disability, depression using LACLS, WHODAS 2.0, SGDS-K. Data were analyzed using descriptive statistics for general characteristics of subjects, Spearman's correlation among LACLS, SGDS-K, WHODAS 2.0, age, educational levels. And multiple regression was used to find influencing factors of functional disability. Results : As a result of this study, we identified that WHODAS 2.0 total score was 50.59, summary score was 9.94 and functional disability of the elderly in rural area is in the 70^th percentile. The highest level of disability occurred in areas related to 'life activities (household)', 'participation in society' and the lowest level of disability occured in areas of 'self-care', 'getting along with people'. Functional disability was significantly correlated with age (r=.398), cognitive function (r=-.547), depression (r=-.563) but not educational levels (r=-.215). Finally, we confirmed that depression (𝛽=.371), cognitive function (𝛽=-.263), widowed status (𝛽=.303), age (𝛽=.272), non-participation of community program (𝛽=.165) was significantly influencing factors of functional disability and the explanatory power of these factors was 52.80 %. Conclusion : This study revealed important factors of functional disability. Therefore, we need to consider these factors when we developed program related to health for the elderly (aged > 65 years) in rural Korea. Further, we need to standardize WHODAS 2.0 in order to enhance its applicability in clinical practices.