• 대한치과교정학회지
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• 제51권1호
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• pp.15-22
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• 2021

Objective: The aim of this study was to evaluate the correlation between the vertical position of maxillary first molar and vertical skeletal measurements in lateral cephalograms by using new linear measurements on the vertical axis of coordinates with calibration. Methods: The vertical position of maxillary first molar (U6-SN), and the conventionally used variables (ConV) and the newly derived linear variables (NwLin) for vertical skeletal patterns were measured in the lateral cephalograms of 103 Korean adults with normal occlusions. Pearson correlation analyses and multiple linear regression analyses were performed with and without calibration using the anterior and posterior cranial base (ACB and PCB, respectively) lengths to identify variables related to U6-SN. Results: The PCB-calibrated statistics showed the best power of explanation. ConV indicating skeletal hyperdivergency was significantly correlated with U6-SN. Six NwLin regarding the position of palatal plane were positively correlated with U6-SN. Each multiple linear regression analysis generated a two-variable model: sella and nasion to palatal plane. Among the three models, the PCB-calibrated model yielded highest adjusted R2 value, 0.880. Conclusions: U6-SN could be determined by the vertical position of the maxilla, which could then be used to plan the amount of molar intrusion and estimate its clinical stability. Cephalometric calibration on the vertical axis of coordinates by using PCB for vertical linear measurements could strengthen the analysis itself.

• 보건행정학회지
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• 제25권3호
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• pp.197-206
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• 2015

Background: The purpose of this study was to propose a method for developing a measure of hospital-wide all-cause risk-standardized readmissions using administrative claims data in Korea and to discuss further considerations in the refinement and implementation of the readmission measure. Methods: By adapting the methodology of the United States Center for Medicare & Medicaid Services for creating a 30-day readmission measure, we developed a 6-step approach for generating a comparable measure using Korean datasets. Using the 2010 Korean National Health Insurance (NHI) claims data as the development dataset, hierarchical regression models were fitted to calculate a hospital-wide all-cause risk-standardized readmission measure. Six regression models were fitted to calculate the readmission rates of six clinical condition groups, respectively and a single, weighted, overall readmission rate was calculated from the readmission rates of these subgroups. Lastly, the case mix differences among hospitals were risk-adjusted using patient-level comorbidity variables. The model was validated using the 2009 NHI claims data as the validation dataset. Results: The unadjusted, hospital-wide all-cause readmission rate was 13.37%, and the adjusted risk-standardized rate was 10.90%, varying by hospital type. The highest risk-standardized readmission rate was in hospitals (11.43%), followed by general hospitals (9.40%) and tertiary hospitals (7.04%). Conclusion: The newly developed, hospital-wide all-cause readmission measure can be used in quality and performance evaluations of hospitals in Korea. Needed are further methodological refinements of the readmission measures and also strategies to implement the measure as a hospital performance indicator.

• 대한방사선기술학회지:방사선기술과학
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• 제43권1호
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• pp.23-27
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• 2020

In South Korea, female individuals in their forties show a high rate of incidence, with approximately 13% of the patients being <40 years. This statistic is more than twice as high as that in Western countries. It is therefore necessary to identify the risk factors for breast cancer incidence by age and economic activity participation status. Women aged 30 to 59-whether breast cancer patients or those in the control group and having no breast cancer-were appraised from the sample cohort database. The data were analyzed using the statistical software R36.2. To identify the factors affecting breast cancer incidence, the degree of association was determined with HR and 95% CI by means of cox regression analysis. As for the socio-demographic variables, the older the individual, the higher the risk of breast cancer incidence becomes. As for the economic activity variables, those who were dependents (unemployed) and who had higher income (medium and high) were at higher risk of breast cancer incidence, which was statistically significant. The income-adjusted HR (model 1) for breast cancer development associated with the economic activity was 1.452 (95% CI, 1.19-1.77). The body mass index and alcohol intake-adjusted HR (model 2) was 1.431 (95% CI, 1.18-1.74). One needs to pay attention to policy plans regarding women's quality of life, as well as to the risk of breast cancer incidence by their economic activity. In other words, policies need to give post care, instead of focus on early detection and cancer treatment.

• Child Health Nursing Research
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• 제24권2호
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• pp.148-156
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• 2018

Purpose: The aim of this study was to evaluate the influence of the mothers' native country on influenza vaccinations in adolescents in multicultural families. Methods: Data were gathered from the 13th (2017) Youth Risk Behavior Web-Based Survey. Logistic regression analyses were conducted using a complex sample data analysis method. The participants in this study had a father who was born in Korea and a mother born outside of Korea. The sample included 481 adolescents. Results: The analysis of non-adjusted confounding variables showed that influenza vaccination was higher in multicultural adolescents whose mother's native country had an annual minimum temperature less than $21^{\circ}C$ (odds ratio [OR]: 1.81, 95% confidence interval [CI]: 1.20~2.74). Furthermore, when the analysis was adjusted for confounding variables, an annual minimum temperature less than $21^{\circ}C$ in the mother's native country had a statistically significant association with influenza vaccination (OR: 2.12, 95% CI: 1.36~3.29). Conclusion: Multicultural adolescents belong to a socioeconomically vulnerable class, and their health promotion behaviors are influenced by their mothers' culture. Thus, healthcare providers and school nurses should provide adolescents with appropriate information related to influenza vaccination depending on their mothers' culture and their family's cultural background.

• 생물정신의학
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• 제26권2호
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• pp.79-87
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• 2019

Objectives The aim of this study was to investigate the impact of clinical and psychological factors on the quality of life of children and adolescents with epilepsy and their families. Methods Children and adolescents with epilepsy and their families (n = 63, age range = 6-17 years) completed questionnaires on epilepsy-related variables, quality of life, children's depressive symptoms, children's anxiety, children's behavioral problems, children's attention problems, parental stress, and parental anxiety. Stepwise regression analysis was performed to determine the significant predictive variables that affect quality of life. Results In the correlational analysis, children's attention problems (r = 0.363, p = 0.004), parental anxiety (r = 0.377, p = 0.003), parental stress (r = 0.564, p < 0.001), and children's behavioral problems (r = 0.503, p < 0.001) showed a significant correlation with quality of life. Parental stress (β = 0.415, p = 0.001, adjusted R² = 0.345) and children's behavioral problems (β = 0.285, p = 0.02, adjusted R² = 0.345) were significantly related to the quality of life. Conclusions Clinicians should pay attention to parental stress and children's behavioral problems, which affect quality of life in families with pediatric epilepsy.

• 생물정신의학
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• 제29권2호
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• pp.46-55
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• 2022

Objectives Many studies have reported noticeable increases in the proportion of employees working either relatively short or relatively long hours. Such trends have been accompanied by an increasing concern that how much subjective mental well-being of employees would be influenced by their hours of work. The aim of this study was to investigate the association between work hours and clinically relevant depressive symptoms with demographic variables adjusted. Methods Participants were employees of a total of 56 private companies and local government organizations in Korea, aged 19 to 65 years. A self-report questionnaire that included items on working hour, job stress, levels of depression, and socio-demographic factors was administered to 15360 Korean employees, with 14477 valid responses. Hierarchical linear regression analyses, adjusted for sociodemographic factors, job related demographic factors, job stress, were used additionally to estimate the association between working hours and depressive scores. Results We found that working more than 40 hours per week correlated positively with the level of depressive symptoms after adjusting for demographic variables and the level of job stress. Furthermore, working 40 or fewer hours per week correlated negatively with the level of depressive symptoms. Being younger (β = -0.078, β = -0.099), being a female (β = 2.770, β = 1.268), and possessing a lower level of education (β = -0.315, β = -1.125) were significantly associated with higher level of depressive symptoms in all respondents. Conclusions Both of working excessively long or short hours is significantly associated with the prevalence of depressive symptoms. Establishing proper office hours for employees is critical to improving the quality of working conditions and maintaining good mental health in the workplace.

• Nutrition Research and Practice
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• 제18권2호
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• pp.239-256
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• 2024

BACKGROUND/OBJECTIVES: Over the past 10 yrs, the prevalence of diabetes in Korea has continued to incline, and the importance of lifestyle modification to manage diabetes has been highlighted. For patients with diabetes, carbohydrate intake reduction is effective in improving glycemic control; thus, we aimed to analyze the effect of carbohydrate intake ratio and suggest an appropriate carbohydrate intake ratio. SUBJECTS/METHODS: Using the 8th Korea National Health and Nutrition Examination Survey (2019-2021), we analyzed the data including participants aged 30 yrs or older with diabetes, and they were stratified into good and poor glycemic control groups. To analyze the correlation between the dietary behavior characteristics of participants with diabetes and the carbohydrate intake ratio, sociodemographic characteristics, dietary behavior, and health behavior were adjusted, and multivariate logistic regression analysis was conducted to present the adjusted odds ratio and 95% confidence interval (CI). RESULTS: In the unadjusted crude model, when carbohydrate intake ratio in total energy intake increased by 1%, the likelihood of poor glycemic control increased by 1.007-fold (95% CI, 0.998-1.016; P = 0.121). In model 1, which uses age and sex as adjustment variables, an increase of up to 1.011-fold was possible (95% CI, 1.001-1.021; P = 0.008). In model 2, which added variables such as diabetes duration, frequency of fruit consumption, frequency of lunch and, frequency of dinner, the risk of poor glycemic control increased by 1.010-fold as the carbohydrate intake ratio increased (95% CI, 0.998-1.022; P < 0.001). CONCLUSION: This study confirmed that as the ratio of carbohydrate intake to total energy intake increases the likelihood of poor glycemic control also increases in patients with diabetes. Therefore, to improve glycemic control in patients with diabetes, controlling the carbohydrate intake may be helpful.

• 수산해양기술연구
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• 제60권1호
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• pp.57-70
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• 2024

In order to present a predictive drift model, Jeju National University's training ship was tested for about 11 hours and 40 minutes, and 81 samples that selected one of the entire samples at ten-minute intervals were subjected to regression analysis after verifying outliers and influence points. In the outlier and influence point analysis, although there is a part where the wind direction exceeds 1 in the DFBETAS (difference in Betas) value, the CV (cumulative variable) value is 6%, close to 1. Therefore, it was judged that there would be no problem in conducting multiple regression analyses on samples. The standard regression coefficient showed how much current and wind affect the dependent variable. It showed that current speed and direction were the most important variables for drift speed and direction, with values of 47.1% and 58.1%, respectively. The analysis showed that the statistical values indicated the fit of the model at the significance level of 0.05 for multiple regression analysis. The multiple correlation coefficients indicating the degree of influence on the dependent variable were 83.2% and 89.0%, respectively. The determination of coefficients were 69.3% and 79.3%, and the adjusted determination of coefficients were 67.6% and 78.3%, respectively. In this study, a more quantitative prediction model will be presented because it is performed after identifying outliers and influence points of sample data before multiple regression analysis. Therefore, many studies will be active in the future by combining them.

• International Journal of Advanced Culture Technology
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• 제9권4호
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• pp.61-70
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• 2021

At a time when children of multicultural families have begun to enter adolescence in Korea, this study examined the effects of parental support and bicultural acceptance on the career attitude maturity of multicultural adolescents. This study tried to derive the implications related to the career path of multicultural adolescents by verifying the effects of self-esteem on the relationship between parental support, bicultural acceptance, and career attitude maturity. Using the 8th Multicultural Adolescent Panel Survey data (MAPS), the relative influence of antecedent variables on career attitude maturity was confirmed by hierarchical regression analysis of the data from 1,197 respondents. Model 1 included gender and parental support, Model 2 added bicultural acceptance to Model 1, and Model 3 added self-esteem to Model 2. As a result of the study, in Model 1, women had higher career attitude maturity than men, and the more supportive their parents were, the more positive the level of career attitude maturity. The adjusted R2 of Model 1 was .058, which did not have much influence. In Model 2, gender, parental support, and bicultural acceptance had statistically significant effects on career attitude maturity, and the amount of change in F was also significant. The adjusted R2 of Model 2 was .132. In Model 3, parental support was not statistically significant, and gender, bicultural acceptance, and self-esteem had statistically significant effects on career attitude maturity. The amount of change in F was statistically significant and the adjusted R2 was .185. That is, it was confirmed that the more the women, the more the bicultural acceptance, and the higher the self-esteem, the more prepared and determined the career path. Based on the research results, the implications related to career preparation of multicultural adolescents were presented.

• 사상체질의학회지
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• 제30권1호
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• pp.50-57
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• 2018

Objectives This study was aimed to examine cold hypersensitivity tendency in the hands, feet and abdomen according to Sasang constitution among Koreans. Methods Multi stage stratified sampling was conducted for random selection of 1,100 participants aged ${\geq}19years$, based on sex, age, region in Oct.2010. Cold hypersensitivity was measured using a questionnaire to score the extent of cold hypersensitivity in the hands, feet, abdomen. Subjects' constitution was diagnosed by Korea Sasang Constitutional Diagnostic Questionnaire (KS-15). The cold hypersensitivity scores according to Sasang constitution were analyzed using logistic regression and one way ANOVA. Results On the one way ANOVA, Soeumin group's cold hypersensitivity in the hands and feet scores were significantly higher than those of Taeeumin and Soyangin groups. However, there was no significant difference in the abdominal cold hypersensitivity scores by constitution. The regression analysis, adjusted for age, sex, and sociodemographic variables, showed that Soeumin group had significantly higher cold hypersensitivity effects of the hands (${\beta}=0.105$, p = 0.002) and feet (${\beta}=0.099$, p = 0.003) than Taeeumin group. Conclusions Soeumin group significantly had higher cold hypersensitivity scores in the hands and feet than Taeumin and Soyangin group.