• Journal of Korea Society of Industrial Information Systems
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• v.28 no.6
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• pp.11-20
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• 2023

The cost of medical treatment for motor vehicle accidents is increasing every year. In this study, we created a model to predict long-term hospitalization(more than 18 days) among minor patients, which is the main item of increasing traffic accident medical expenses, using five algorithms such as decision tree, and analyzed the factors affecting long-term hospitalization. As a result, the accuracy of the prediction models ranged from 91.377 to 91.451, and there was no significant difference between each model, but the random forest and XGBoost models had the highest accuracy of 91.451. There were significant differences between models in the importance of explanatory variables, such as hospital location, name of disease, and type of hospital, between the long-stay and non-long-stay groups. Model validation was tested by comparing the average accuracy of each model cross-validated(10 times) on the training data with the accuracy of the validation data. To test of the explanatory variables, the chi-square test was used for categorical variables.

• Journal of Digital Convergence
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• v.14 no.12
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• pp.537-544
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• 2016

This study was to investigate their relevance between oral health behaviors and number of remaining teeth of the elderly welfare recipients through the fluoride and scaling of the business. Researcher collected 660 subjects over 60 elderly welfare recipients investigated self-administered survey and use denture and number of remaining teeth though oral examination. Increasingly age number of teeth remaining reduced, there is a difference on the number of remaining teeth according to gender, age, the use of oral hygiene products, self diagnosis oral condition, brushing after lunch and showed significant difference(p<0.05). The remaining number of teeth can be prevented by attention and efforts of subjects. Therefore, we investigated convergent effects of oral health behaviors on number of remaining teeth of the elderly, I hope that oral health care program continually provides expansion of preventive treatment and to maintain the provision of health care about vulnerable group.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.6
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• pp.2161-2168
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• 2010

The administration data of the national health insurance and health insurance bills were utilized in this study. The data of 485,953 patients who were at the age of 30 and up and used the out-patient departments of every medical institution located in some regions involving two southern and northern provinces once or more during a 184-day period from July to December, 2008. As a result of analyzing their Continuity of Ambulatory Care and factors affecting it, the following findings were given: The continuity of ambulatory care among the adult patients with hypertension in our country turned out to be on a high level(MMCI $0.96{\pm}0.13$, MFPC $0.96{\pm}0.12$). Given examining the outpatient medical-cure continuity level according to index, the averagely medical-cure continuity level was calculated to be high level with MMCI, $0.96{\pm}0.13$, and MFPC $0.96{\pm}0.12$. Thus, the tendency of visiting only one medical provider was high. The findings of the study illustrated that the average continuity of ambulatory care among the adult patients with hypertension in our country was on a high level, and it seemed that special care should be provided to patients with a low-level continuity of ambulatory care, such as women and elderly people aged 64 and over. The findings of the study are expected to serve as one of the barometers for the health care of patients with hypertension and for the performance of national hypertension management plans.

• Health Policy and Management
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• v.19 no.3
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• pp.125-141
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• 2009

The purpose of this study was to examine the role of provider practice patterns in the difference in health expenditure between the two types of patients: Health Insurance and Medical Aid type 1. The study used the outpatient claim data for all Medicaid and health insurance patients of hypertension who received medical services from 8,454 primary care physicians during the first half of 2006. The data were stratified by patient's gender and age for the two groups of patients who received care from the same physician. The dependent variables were the differences in medical expenditure per case, patient days per case and medical expenditure per patient day between Medicaid patients and health insurance patients. Empirical results showed that physician characteristics, such as physicians under age 50, greater proportion of pediatric Medicaid patients, lower proportion of new Medicaid patients and the greater number of comorbidity of Medicaid patients are associated with the greater difference between the two types of patients (i.e., greater expenditure of Medicaid patients relative to health insurance patients). This study shows that factors associated with provider practice patterns need to be taken into account in Medicaid policy.

• Health Policy and Management
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• v.28 no.2
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• pp.138-144
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• 2018

Background: Diagnostic imaging fee had been reduced in May 2011, but it was recovered after 6 months because of strong opposition of medical providers. This study aimed to analyze the behavior of medical providers according to fee changes. Methods: The National Health Insurance claims data between November 2010 and December 2012 were used. The number of exams per computed tomography was analyzed to verify that the fee changes increased or decreased the number of exams. Multivariate regression model were applied. Results: The monthly number of exams increased by 92.5% after fee reduction, so the diagnostic imaging spending were remained before it. But medical provider decreased the number of exams after fee return. After adjusting characteristic of hospitals, fee reduction increased the monthly number of exams by 48.0% in a regression model. Regardless type of hospitals and severity of disease, the monthly number of exams increased during period of fee reduction. The number of exams in large-scaled hospitals (tertiary and general hospital) were increased more than those of small-scaled hospitals. Conclusion: Fee-reduction increased unnecessary diagnostic exams under the fee-for-service system. It is needed to define appropriate exam and change reimbursement system on the basis of guideline.

• Journal of The Korea Institute of Healthcare Architecture
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• v.21 no.2
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• pp.45-53
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• 2015

Purpose: This study is to derive the behavioral characteristics of the users appear in the outpatient department of psychiatry. Methods: By referencing John Zeisel's Tools for environment-behavior research, observation of user behavior and expert interviews as a method of the study has been carried out. Results: The results of this study are as follows. First, adjacent placement among children, youth and regular the outpatient department of psychiatry is necessary and easy access to internal medicine department and family medicine department is required in order to allow cooperated treatments. Secondly, depending on the characteristics of the outpatient department of psychiatry treatment, adjustment of space requirement or the change of kinds of necessary space is required. Third, considering the psychological and behavioral characteristics of mental illness and guardians, various search for the environment that can support this. Implications: This study is a basic research for space improvement and evaluation of the outpatient department of psychiatry, and need to be followed by further study using various perspectives and methods.

• Journal of the Korea Convergence Society
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• v.11 no.9
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• pp.45-50
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• 2020

This study used data from the 15th (2019) Youth Health Behavior Online Survey. A study was conducted to investigate the relationship between oral health behaviors and drink intake and oral symptoms in adolescents. The collected data was analyzed using SPSS/WIN 25.0 program, a software for statistical analysis. Logistic regression analysis using oral symptoms as a dependent variable revealed that gender, school classification, academic performance, dental treatment experience, carbonated beverages, energy drinks, and sweet drink intake were associated with oral symptoms. Based on the above results, consumption of carbonated beverages, energy drinks, and sweet beverages was found to have a negative effect on oral symptoms. In the future, it is thought that oral health education related to drinking intake will be needed by setting guidelines for sugar intake.

• Journal of dental hygiene science
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• v.13 no.4
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• pp.440-448
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• 2013

The purpose of this study was to analyze the effects of perceived stress on dietary habits and oral health behaviors in Korean adolescents. Data were from the Korea Youth Risk Behavior Web-based Survey (KYRBS) in 2011. A total of 74,186 adolescents were surveyed using the self-administered questionnaire. Logistic regression analyses were performed to elucidate the effects of perceived stress on dietary habits and oral health behaviors. Statistical analyses were conducted, and p<0.05 were considered significant. We found that adolescents with higher stress were more likely to increase the risk of adverse dietary habits (low consumption of fruits, vegetables and milk, high consumption of carbonated soft drinks, fast food and cookie) compared to those with lower stress. Regarding the relationship between perceived stress and oral health behaviors, adolescents with higher stress were less likely to practice oral health behaviors such as brushing teeth after snack consumption and brushing teeth before sleep compared to those with lower stress. This result indicates that adolescents' perceived stress might play a significant role in the negative dietary habits and oral health behavior.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.429-436
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• 2019

This study used raw data from the 2013-2015 National Health and Nutrition Survey, and conducted a multivariate logistic regression analysis to identify factors related to teeth extraction from Korean elderly aged 65 and older (4.037). As a result, the risk of tooth extraction was 1.84 times higher in males, 1.52 times in age 75 or older, 2.36 times higher in income, 2.04 times higher in income, and 1.44 times higher in smokers. The results were statistically significant as 1.49 times without oral examination and 2.30 times without dental treatment for 1 year. Through this, the current health behavior and oral health behavior can reinforce the basis of risk factors related to the need for tooth extraction. At the national level, we need to look for diversification.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.2802-2811
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• 2013

This study was conducted to provide basic data for improvement of oral health of workers, by investigating oral health behaviors of industrial workers. About sixty percent(60.9%) of subjects experienced in having dental examinations and 54.3% of them didn't receive follow-up treatments after the dental examinations. Also, those who brushed teeth twice per week(58.6%) and averagely, earned 2~3 million won of monthly income(p<.01), showed a higher frequency of tooth brushing. Experienced workers(p<.01) were more interested in oral health. Those who were engaged in other jobs and had less than 10~20 years of experience(p<.05), had lots of experience in staying away from work. More aged group recognized that oral health education is necessary(p<.05). The population of oral examination and health instruction may have a favorable impact on maintenance of oral health status and improvement in quality of life.