• Journal of the Korean Society of Safety
• /
• v.32 no.6
• /
• pp.116-124
• /
• 2017

The purpose of this study is to examine the effect of subjective overwork on health and the moderating effect of risk perception in the relationship between subjective overwork and health. The data used in this study are the fourth Korean Working Condition Survey (KWCS) conducted by Korea Occupational Safety and Health Agency (KOSHA) in 2014. The items related to actual working hours, subjective overwork, health, and risk perception were used. A total of 18,508 workers who are 1) waged workers, 2) work more than three days a week, 3) work more than 21 hours a week, 4) work longer than preferred work hours or work as longer as they desired were selected. Hierarchical regression analysis was performed to identify the effect of actual work hours, subjective overwork, prevalence of risk, lethalness of accident damage on health and to determine the moderating effects of prevalence of risk and lethalness of accident damage. As a result, actual work hours, subjective overwork, prevalence of risk, lethalness of accident damage had an effect on worker's health problems. Second, lethalness of accident damage had a moderating effect in the relationship between subjective overwork and health. These results suggest that organizations should manage worker's environmental factors and other threats that could increase the lethalness of accident damage.

• Journal of Digital Convergence
• /
• v.15 no.6
• /
• pp.283-295
• /
• 2017

The purpose of this study was to identify the effect of psychological health and physical health on health-related quality of life(HRQoL) in Korean Echo Generation by using Korea Health Panel Data 2013. The Korea Health Panel Data 2013 were collected from February to October 2013 and 2,261 respondents were analyzed. The data were analyzed by Independent t-test, ANOVA and multiple regression using SPSS WIN 24.0 program. he mean score of HRQoL was 0.98. The effect of unmet medical needs, psychological & physical stress, unmet basic needs, anxiety about the future, depression, suicidal ideation, smoking, sleeping time, hearing problem, eating problem, restriction of activity, and self-rated health status) were significant on HRQoL. Health care providers should consider the effect of psychological and physical health when they design program for the improvement of HRQoL for Korean echo generation in community.

• Journal of Family Resource Management and Policy Review
• /
• v.20 no.3
• /
• pp.1-23
• /
• 2016

This study analyzes the effects of caring for grandchildren on Korean grandparents' health, using the Korean Longitudinal Study of Aging from 2006 to 2012. We investigate how caregiving is provided and analyze the effects of caregiving on grandparents' physical health, mental health, and health-related behaviors. As elderly people's health is generally frail, it is unclear whether the provision of childcare affects their health negatively. We control for the endogeneity of caregiving by an individual fixed effect (FE) model and instrumental variable-fixed effect (FE-IV) models. Using these models, we determine the endogeneity of caregiving and show that the significant effects of caregiving on health disappear as we control for endogeneity in the FE and FE-IV models. Even after controlling for endogeneity, we find that caregiving increases the probability of feeling pain as well as the number of different types of pain. Furthermore, caregiving increases the probability of restrictions on daily activities because of pain. On the other hand, caregiving reduces the symptoms of depression. In relation to health-related behaviors, caregiving reduces the probability of physical exercise and regular meals. Our results imply that although caregiving has a positive effect on mental health, the increase in physical pain and in non-healthy behaviors may lead to a deterioration of the caregiver's long-term health, which in turn may increase the medical costs of the elderly. Potential policy alternatives are discussed in the paper.

• Health Policy and Management
• /
• v.8 no.2
• /
• pp.149-165
• /
• 1998

The purpose of this study is to examine the effect of the health status on the quality of life of the rural elderly, and to examine the conditional effect of socialsupport for that influence. 'Quality of life' used in this study was defined by unidimensional approach. The data were collected by conducting individual interviews with 296 rural elderly people aged 60 and the above who were living in one township of Kangwondo, between the time period of October and November 1995. The main findings are as follows: 1. Hierarchical regression analyses were carried out to examine the relative contribution of three set of variables on the quality of life. The first step, which included sociodemographic factors showed that the coefficient of determination (R$^{2}$) was 8% and income was a statisically significant variable. The second step, by adding health related factors, revealed that the R$^{2}$ was increased to 34% by 26% point and the degree of health recognition was the statistically significant variable. The third step, by projecting additionall social support related variables revealed that the R$^{2}$ was 42% 2. The conditional effect of social support was analyzed to examine the influence the health status has on the quality of life. The results are as follows: 1) The IADL and the degree of social contact interacted, resulting in that the higher degree of social contact boosted the stronger effect of IADL. 2) The effect of subjective health recognition on the quality of life is depended upon degree of family ontact. 3) The effect of eyesight on the quality of life is depended upon degree of satisfaction in social relation. The lower the degree of social support was, the bigger the influence of health related variables affecting quality of life became. This study explains that health status is a major factor in predicting the quality of life of the aged. Particularly the subjective health recognition was an important factor as the perception of quality of life.

• Journal of Korean Physical Therapy Science
• /
• v.18 no.2
• /
• pp.63-71
• /
• 2011

Purpose: This study is designed to examine the effect of self-efficacy on stress-coping methods of health related and non-health related department college students. Method: A questionnaire survey was conducted on 533 students (268 health department and 265 non-health department) of health department and non-health department students at 1 university and 2 university in Gyeonggi-do, jeollabuk-do and jeollanam-do. Results: The results were statistically analyzed using SPSS 12.0, which made no statistically-significant difference among health and non-health students. The study on the effect of self-efficacy on stress-coping methods has revealed that both health and non-health department students showed statistically-significant positive correlation between self-efficacy and emotion-centered coping methods. Also, Social efficacy had negative correlation with social-supported coping methods. While non-health department students had statistically-significant positive correlation between self-efficacy and wishful coping. Conclusion: Accordingly, it has been revealed that self-efficacy is effective in stress-coping methods.

• Health Policy and Management
• /
• v.22 no.2
• /
• pp.225-248
• /
• 2012

Community Health Planning has been used in public health centers for over 10 years, but little is known about its effect and how it is utilized by public health centers. This paper examines the effect of Community Health Planning on public health centers'organizational performance through the use of the Structural Equation Modeling(SEM) technique. We conducted e-mail surveys of chiefs, people in charge of planning and other staff members in all the public health centers in the country. The instrument measured self-evaluated levels of Community Health Planning, implementation and the effect on the public health centers. The model of the SEM technique has five latent constructs: requirements of planning, plan formulation, implementation, organizational capacity and performance. The SEM technique validated the instrument used in the study and exhibited a relatively good fit. Results of this study were as follows. First, the requirements of planning have positive effects on plan formulation. Second, plan formulation has positive effects on organizational capacity but plan implementation doesn't. Third, there was no statistically significant path between plan formulation, implementation and performance. Fourth, organizational capacity has positive effects on performance. Consequently, this study revealed that Community Health Planning has a positive influence on organizational performance through organizational capacity.

• Journal of Preventive Medicine and Public Health
• /
• v.56 no.4
• /
• pp.303-311
• /
• 2023

Traditional mediation analysis, which relies on linear regression models, has faced criticism due to its limited suitability for cases involving different types of variables and complex covariates, such as interactions. This can result in unclear definitions of direct and indirect effects. As an alternative, causal mediation analysis using the counterfactual framework has been introduced to provide clearer definitions of direct and indirect effects while allowing for more flexible modeling methods. However, the conceptual understanding of this approach based on the counterfactual framework remains challenging for applied researchers. To address this issue, the present article was written to highlight and illustrate the definitions of causal estimands, including controlled direct effect, natural direct effect, and natural indirect effect, based on the key concept of nested counterfactuals. Furthermore, we recommend using 2 R packages, 'medflex' and 'mediation', to perform causal mediation analysis and provide public health examples. The article also offers caveats and guidelines for accurate interpretation of the results.

• Journal of Society of Preventive Korean Medicine
• /
• v.19 no.3
• /
• pp.57-66
• /
• 2015

Objective : Private health insurance coverage in Korean medicine has been reduced since October 2009 for preventing unnecessary utilization. The aim of this study is to identify how private health insurance coverage reduction affects on the Korean medicine utilization. Method : We analyzed the Korea Health Panel data from 2008 to 2012. Panel negative binominal regression model was used to analyze the relationship between private health insurance coverage reduction and utilization of outpatient service. Panel tobit regression analysis was used to identify the relationship between private health insurance coverage reduction and health expenditure of outpatient service. Results : Private health insurance coverage reduction significantly dropped both utilization and health expenditure of outpatient service by 9%, 9.22% respectively. In addition, therapeutic utilization significantly decreased up to 10%. Conclusion : Private health insurance coverage reduction seems to have an effect to reduce both utilization and the health expenditure of Korean medicine outpatient service. This effect was more noticeable in the therapeutic utilization. Thus, more elaborate policy will be needed to prevent unnecessary utilization of Korean medicine.

• Journal of the Korean Applied Science and Technology
• /
• v.37 no.2
• /
• pp.268-278
• /
• 2020

This study aimed to identify the moderating effect of public health service utilization rate between public health resources and community mental health. The subjects included 144 local communities, from the data of 6th Community Health Plan and the 2015 Community Health Survey. Public health resources were measured by public health budget, public mental health budget and public mental health personnel; and mental health was measured by rate of perceived stress, rate of depressive mood and suicide rate. The hierarchical regression analysis was used to identify the moderating effects. The results were as followed. First, the effect of public mental health budget on rate of depressive mood was moderated by public health service utilization rate. Second, the effect of public mental health personnel on rate of depressive mood was moderated by public health service utilization rate. Third, the effect of public mental health personnel on suicide rate was also moderated by public health service utilization rate. Fourth, the effect of public health resources on mental health differed between the groups with high and low public health service utilization rate. In improving community mental health, the measures to improve the public health service utilization rate should be considered to ensure that reinforcing public health resources leads to the improvement of community mental health.

• Advances in Traditional Medicine
• /
• v.5 no.1
• /
• pp.48-56
• /
• 2005

We studied the protective effect of Echinacea purpurea against radiation by evaluating changes in the peripheral blood cell count and peripheral blood antioxidant activity. Echinacea purpurea administration had a suppressive effect on radiation-induced leukopenia, especially on lymphocytes and monocytes and resulted in a faster recovery of blood cell counts. Mouse peripheral blood antioxidant activity was increased by Echinacea purpurea, and a relationship between the suppressive effect on radiation-induced leukopenia and the antioxidant effect was suggested.