• Journal of Distribution Science
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• v.18 no.10
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• pp.53-64
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• 2020

Purpose: With the emergence of high technology in China, online shopping distribution of fresh agricultural products have been developing rapidly. This study built a model to investigate how perceived quality of products and logistic services, perceived risk, and perceived cost affect intention to buy fresh agricultural products in an Internet environment. Especially, in the purchasing process, attitude may work as an important mediator. Research design, data and methodology: To achieve the objectives of this study, Chinese respondents were asked to fill in a questionnaire through the China online survey website. With 520 available data, regression analysis was used to test the hypotheses. Results: Results indicate that perceived quality of fresh agriculture products and perceived logistics service quality have a significant positive impact on attitude and purchase intention. Results also reveal that perceived risk and perceived cost affect attitude and purchase intention negatively. Finally, results imply that attitude has a positive effect on purchase intention, which is the unique mediator in the online shopping process. Conclusions: This study suggests that managers in the online shopping distributions of fresh agricultural products should improve the quality of products and logistics services along with the reduction of the perceived risk and cost to compete in the China market.

• Journal of Environmental Health Sciences
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• v.39 no.1
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• pp.99-103
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• 2013

Objectives: This paper was prepared in memory of Jerry Sherwood, who provided a significant contribution to the Korean environmental and occupational health fields. Methods: Rare air quality data in Seoul were gathered by Jerry Sherwood when he visited Korea in the early 1980s. $SO_2$ and TPM concentrations were measured. These air quality measurements were based on ambient stationary monitoring and indoor air quality monitoring in various locations. Measurement during transportation was also applied. Results: Ambient $SO_2$ and TPM concentrations in Seoul were very high in the early 1980s. Ambient $SO_2$ concentrations were higher at nighttime. While ambient $SO_2$ concentrations varied by location, the Guro industrial area showed high levels. When indoor sources were presented, indoor $SO_2$ concentration was higher than outdoor level. Coal briquettes were closely associated with high indoor $SO_2$ concentration. Conclusion: This paper provided valuable historical information of air quality in Seoul.

• Journal of Sasang Constitutional Medicine
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• v.33 no.1
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• pp.102-108
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• 2021

Objectives The purpose of this study was to identify differences in sleep by Sasang constitutional type using Pittsburgh Sleep Quality Index(PSQI). Methods The subjects of this study were 3,578 people who had information on Sasang constitutional type and PSQI among the data established at the Korean Medicine Data Center. We compared each item score in PSQI (subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbance, use of sleep medication, daytime dysfunction) and PSQI global scores by Sasang constitutional type using analysis of variance. Logistic regression was conducted to calculate the odds ratio of poor sleep by Sasang constitutional type. Results & Conclusions The SE type showed statistically significantly higher scores than the TE type and SY type in subjective sleep quality, sleep latency, habitual sleep efficiency, sleep disturbance, and PSQI global score, indicating poor sleep compared to other constitutional types. The odds ratio for poor sleep also shows that even after adjusting sex, age, height, and weight, the SE type was significantly higher than other constitutional types, indicating that the SE type could be a risk factor for poor sleep.

• Journal of Korean society of Dental Hygiene
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• v.22 no.2
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• pp.107-115
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• 2022

Objectives: This study aimed to examine the effects of dietary protein intake and quality on periodontal disease in Korean adults. Methods: The data used for analysis were obtained from the 7th Korean National Health and Nutrition Examination Survey (2016-2018). Data were analyzed using chi-square and t-test. Additionally, multiple logistic regression analysis was performed to assess the association between dietary protein intake and quality and periodontal disease. Statistical significance level was set at <0.05. Results: Multiple logistic regression analysis of dietary protein intake and periodontal disease in the model adjusted for socioeconomic factors showed that were significantly related to the Q1 (odds ratio [OR]: 1.18, 95% confidence interval [CI]: 1.01-1.39). However, this correlation was not significant in the model in which all variables were corrected. Moreover, analysis of the dietary protein quality and periodontal disease in model 4, which was adjusted for socioeconomic variables, showed that were significantly related to the low score (OR: 1.13, 95% CI: 1.00-1.27). Conclusions: The results showed a significant association between periodontal disease and poor intake and quality of dietary protein in the Korean adult population.

• Journal of Korean society of Dental Hygiene
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• v.24 no.2
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• pp.141-148
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• 2024

Objectives: The purpose of this study was to investigate the effect of denture use on the quality of life of cancer patients aged ≥40 years. Methods: Data from the National Health and Nutrition Examination Survey (2013-2018) were used in this study. A total of 302 individuals were selected as the final study participants. Data were analyzed using the chi-square test and logistic regression analysis using SPSS software. Results: The quality of life in the group with dentures was lower than that in the group without dentures. Conclusions: The use of dentures had a significant effect on the quality of life of cancer patients aged ≥40 years. Therefore, national dental care guidelines and policies should be developed to prevent an increase in tooth loss in patients with cancer.

• Journal of Korean Academy of Nursing
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• v.44 no.4
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• pp.418-427
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• 2014

Purpose: Objectives of this study were to investigate the association between efficiency and quality of health care in Long-term Care Hospitals (LTCH) and determine related factors that would enable achievement of both high efficiency and high quality at the same time. Methods: Major data sources were the "2012 Korean Assessment of Propriety by Long-term Care Hospitals" obtained from the Health Insurance Review & Assessment Service. Cost variables were supplemented by a National Tax Service accounting document. First, data envelopment analysis was performed by generating efficiency scores for each LTCH. Second, matrix analysis was conducted to ascertain association between efficiency and quality. Lastly, kruskal-wallis and mann-whitney tests were conducted to identify related factors. Results: First, efficiency and quality of care are not in a relationship of trade-offs; thus, LTCH can be confident that high efficiency-high quality can be achieved. Second, LTCH with a large number of beds, longer tenure of medical personnel, and adequate levels of investment were more likely to have improved quality as well as efficiency. Conclusion: It is essential to enforce legal standards appropriate to the facilities, reduce turnover of nursing staff, and invest properly in human resources. These consequences will help LTCH to maintain the balance of high efficiency-high quality in the long-run.

• Nutrition Research and Practice
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• v.14 no.4
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• pp.352-364
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• 2020

BACKGROUND/OBJECTIVES: Given the increasing proportion of the Korean population that is aged 65 years and older, the present study analyzed the relationship between diet quality and sarcopenia in elderly persons by using data from the 2008-2011 Korea National Health and Nutrition Examination Survey (KNHANES). SUBJECTS/METHODS: Data for 3,373 persons aged 65 years and over (men: 1,455, 43.1%) were selected from the 2008-2011 KNHANES. Sarcopenia assessments are based on a formula that divides a subject's appendicular skeletal muscle mass (ASM) by their weight (wt) and multiplies that result by 100 ([ASM/wt] × 100). Sarcopenia is present if the subject's result was less than one standard deviation (SD) below the sex-specific mean for a young reference group. For evaluation of diet quality, data obtained via the 24-hour recall method were used to calculate the Diet Quality Index for Koreans (DQI-K). A general linear model was applied in order to analyze general information and nutritional intake according to sarcopenia status. For analysis of the relationship between diet quality and sarcopenia, a binominal logistic regression analysis was undertaken. RESULTS: The sarcopenia prevalence rate among the study subjects aged 65 years and over was 37.6%. The DQI-K of those without sarcopenia was 3.33 ± 0.04 points, while that of those with sarcopenia was 3.45 ± 0.04 points (P < 0.05). The relationship between diet quality and sarcopenia revealed that subjects aged 75 and older had a poor diet quality, and their odds ratio (OR) of sarcopenia presence was significantly higher (OR: 1.807, 95% confidence interval: 1.003-3.254, P < 0.05). CONCLUSIONS: This study revealed that poor diet quality was related to sarcopenia presence in Koreans aged 75 and older. In order to improve the diet quality of the elderly (aged 75 and older), it is necessary to develop dietary improvement guidelines.

• Journal of Korean society of Dental Hygiene
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• v.21 no.6
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• pp.741-750
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• 2021

Objectives: To provide basic data for oral health policy by identifying the differences in oral health behaviors and conditions among middle-aged people in their 40s and 50s and relating these to their health-related quality of life, and to identify factors affecting health-related quality of life. Methods: In this study, secondary data from the National Health and Nutrition Examination Survey were used. Data were gathered from 8,127 participants, of which 2,353 were middle-aged (40-59 years old). Covariance analysis was performed using a complex sample general linear model to investigate the changes in the subjects' health-related quality of life (EQ-5D) according to their general characteristics, oral health behaviors, and oral health status. Results: Oral health behavior was not significantly related to health-related quality of life. In contrast, a higher oral health status (chewing function) was associated with better health-related quality of life. Conclusions: In conclusion, this study suggested a close relationship between oral health status (chewing function) and health-related quality of life. Therefore, it is necessary to recognize the importance of oral health in improving the health-related quality of life of middle-aged people in their 40s and 50s, as well as in informing oral health policies and preventive measures for individuals and communities.

• Journal of Korean society of Dental Hygiene
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• v.23 no.5
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• pp.361-368
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• 2023

Objectives: This study investigated the oral health and quality of life of patients with hypertension using the raw data of the 8th National Health and Nutrition Examination Survey, the second year (2020) and 1,269 subjects were analyzed. Methods: The data underwent frequency analysis, descriptive statistics, general linear model analysis, and linear regression analysis using SPSS Statistics 26.0. Results: The quality of life (EuroQol-5 dimension: EQ-5D) of patients with hypertension was surveyed at 0.92 points/1 point. Quality of life according to general characteristics showed significant differences in gender (p<0.001), age (p<0.001), household income (p<0.001), and education level (p<0.001). Quality of life according to oral health showed significant differences in chewing discomfort (p<0.001), speaking discomfort (p<0.001), oral examination (p=0.004), toothache experience (p=0.020), subjective oral health (p<0.001) and oral care product use (p=0.006). Factors affecting quality of life were gender, age, household income, education level, chewing discomfort (B=-0.027, p=0.018), speaking discomfort (B=-0.049, p=0.026), toothache experience (B=-0.018, p=0.027) and subjective oral health (B=0.022, p<0.001). Conclusions: Based on the above results, it was confirmed that the oral health of patients with hypertension is a factor influencing the quality of life; thus, it is considered that it will be used as basic data for research on measures to improve oral health and quality of life.

• Journal of the Korean Home Economics Association
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• v.26 no.2
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• pp.49-67
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• 1988

The purpose of this study was to present a conceptual model for predicting housing quality. Housing quality was measured in three ways: perceived quality about physical features of houses, perceived level of the quality in comparison with perceived average level I urban area and housing satisfaction. The specific objectives to achieve the purpose were ; 1) to measure the perceived quality about physical features of houses and perceived level of the quality in comparison with the perceived average level I urban 2) to measure the level of housing satisfaction 3) to clarify the causality between the composite variables of housing quality. A final instrument was developed through two stage pilot surveys. The respondents were 1292 homemakers of middle and high economic class in seoul and Daejeon, selected through stratified random sampling technique. Data were collected during March and April, 1986, and analyzed using SPSS and SAS computer packages. The statistics used were frequency, percentage, F-test, Duncan's Multiple Range, x2, Cramer's V, Multiple linear Regression, Path analysis. The major finding were as follows; the variables significantly related to predict the housing quality were found. The simple, composite variables and 3 measures of housing quality were linked using path analysis, thereby a conceptual model predicting housing quality was suggested.