• Journal of Nutrition and Health
• /
• v.45 no.6
• /
• pp.600-612
• /
• 2012

Nutritional researchers world-wide are using large-scale sample survey methods to study nutritional health epidemiology and services utilization in general, non-clinical populations. This article provides a review of important statistical methods and software that apply to descriptive and multivariate analysis of data collected in sample surveys, such as national health and nutrition examination survey. A comparative data analysis of the Korea National Health and Nutrition Examination Survey (KNHANES) was used to illustrate analytical procedures and design effects for survey estimates of population statistics, model parameters, and test statistics. This article focused on the following points, method of approach to analyze of the sample survey data, right software tools available to perform these analyses, and correct survey analysis methods important to interpretation of survey data. It addresses the question of approaches to analysis of complex sample survey data. The latest developments in software tools for analysis of complex sample survey data are covered, and empirical examples are presented that illustrate the impact of survey sample design effects on the parameter estimates, test statistics, and significance probabilities (p values) for univariate and multivariate analyses.

• Biomedical Science Letters
• /
• v.28 no.3
• /
• pp.178-185
• /
• 2022

The purpose of this study was to analyze the effect of chewing difficulty on osteoarthritis in Korean adults. Data from the National Health and Nutrition Examination Survey for two years from 2019 to 2020. The collected data were analyzed using the SPSS (21.0) program using composite samples, and the mean crossover analysis and logistic return analysis were performed. An analysis of the effects of chewing difficulty on osteoarthritis in korean adults showed that those with chewing difficulty had a 2.02 fold higher risk of osteoarthritis (95%CI=1.56~2.42) and a statistically significant difference (P<0.05). The association between the chewing difficulty on osteoarthritis could be confirmed, and measures improve of the oral health and preventing osteoarthritis should be prepared.

• The Korean Journal of Food And Nutrition
• /
• v.20 no.3
• /
• pp.334-340
• /
• 2007

The purpose of this study is to analyze silver consumers' life style, and whether silver consumers ’ life style have an effect on purchase satisfaction and repurchase intention of the health functional foods. To this end, a survey was conducted from May 28 to June 20 in 2007, among silver consumer aged in over 50s, on their purchase experience of the health functional foods. The survey was conducted with 326 subjects, and the statistical analysis methods were frequency analysis, factor analysis, and multiple regression analysis. According to the result of this study, First, the silver consumers' life style factors were determined to be health and leisure pursuit, material pursuit, family pursuit, and outgoing challenge pursuit. And purchase satisfaction factors of the health functional foods were determined to be taking after dosage and service, function and purchase, appearance of health functional foods. Second, silver consumers' family pursuit life style and outgoing challenge life style had an effect on taking and service satisfaction, appearance and products satisfaction of the health functional foods. Third, purchase satisfaction had an effect on repurchase intention of the health functional foods. Therefore, this study is significant in that it clarifies the relation of silver consumers' life style and purchase satisfaction and repurchase intention of the health functional foods.

• Journal of the Korea Safety Management & Science
• /
• v.14 no.4
• /
• pp.137-145
• /
• 2012

This study was planned to analyze the effect of the types of employment on work-related injury experience. The types of employment may have influenced on working conditions including the exposure to risk factors. Korean Working Conditions Survey have collected the various working conditions as household survey with structured questionnaire. The probability of work-related injury of self-employed is more than that of regular worker. But there is no difference of probability of work-related injury experience between regular and irregular worker controlled by general characteristics and the exposure to risk factors. Authors have found that the type of employment have indirect effect on work-related injury experience via the exposure to risk factors. The result of this study may be heuristic one because of data limitation as cross sectional survey data. In future, well designed survey data can evaluate the effect of the type of employment on safety and health status.

• Journal of Korean society of Dental Hygiene
• /
• v.21 no.5
• /
• pp.621-628
• /
• 2021

Objectives: The purpose of this study was to determine the differences in quality of life between groups that promote oral health and those that treat oral diseases using data from the National Health and Nutrition Examination Survey. Methods: Data analysis was performed using IBM SPSS ver. 21.0 (IBM Co., Armonk, NY, USA). A total of 3,338 subjects were selected as subjects for the study before applying oral health promotion (OHP; 1,132 persons) and oral disease treatment (ODT; 2,206 persons). Complex sample logistic regression analysis was performed to determine the effects of OHP and ODT on health-related quality of life. Results: As a result of confirming the effect of OHP and ODT on the quality of life, which are indicators of the quality of life, HINT-8 had a significant effect even in Model 2, adjusted for demographic characteristics, with a significant difference (p<0.01). Conclusions: The above results confirmed that persons who promote oral health have a significant effect on HINT-8, a quality of life scale developed for Koreans. Therefore, continuous oral care is required to improve quality of life.

• The Korean Journal of Emergency Medical Services
• /
• v.4 no.1
• /
• pp.7-16
• /
• 2000

The purpose of this study to test the effect of health education on the performance of health promoting behavior in E.M.T. students. The data were collected from 77 EMT students by questionnaire. The first survey were conducted from March 20 to April 2. The second survey were conducted from August 8 to September 5 on same group. The data were analyzed by pecentage, mean, t-test using SAS program. The result of this study were as follows : 1. The average item score for the health promoting was 2.35 at freshman. 2. The average item score for the health promoting was 2.59 after one year on same group. In the subcategories, the highest degree of performance was personal relationship support, self-actualization, stress management, nutrition and health responsibility and the lowest degree was sports. 3. Hypothesis that the EMT student who get health education will have a higher degree of health promoting behavior than the freshman EMT student was accepted.

• Child Health Nursing Research
• /
• v.10 no.1
• /
• pp.108-116
• /
• 2004

Purpose: There has been a number of reports on elution of bisphenol-A, an endocrine disrupting chemical, from milk bottles, all concerning the potential health effect of the substance. In this study, we measured the elution of bisphenol-A from milk bottles during boiling-water sterilization, to suggest a safe sterilization method. Method: Through the survey of 200 mothers, 78.5％ of them expressed their concern on the possible harmful effect of bisphenol-A, which might be eluted from the bottles. And it was found that most mothers use boiling-water to sterilize bottles; duration of boiling bottles could be divided into three groups of 3, 5, and 10 minutes. We measured the elution of bisphenol- A from three different brands of bottles, subject to various mode of sterilization found in the survey. Result: In all the measurements, the concentration of the eluted bisphenol-A was in the range of 0.3 - 0.7 ppb, far below 2.5ppm, the level set up by Korea Food ％amp; Drug Administration(KFDA) for a potential harmful effect. Conclusion: Although trace amount of bisphenol -A can be eluted from polycarbonate milk bottles during sterilization, and bottle feeding, the amount is found to be too small to cause any health related impact for infants.

• Journal of the Korea Safety Management & Science
• /
• v.16 no.4
• /
• pp.203-213
• /
• 2014

Sickness absence is one of the most important indicators for worker's health and occupational safety and health performance. Sickness absence is primarily depended upon sickness but psycho-social factors in workplace may moderate sickness absence. Even though worker is falling into illness, sickness absence can be prevented by job satisfaction. In Korea it is very difficult to find research output about the association of sickness absence with job satisfaction. This study is planned to investigate the effect of job satisfaction on sickness absence. The third Korean Working Conditions Survey done by Occupational Safety and Health Research Institute in 2011 was used to analyze by logistic regression analysis. The result has shown that job satisfaction has statistically significant effect on sickness absence and simultaneously diminish the effect of symptoms experience on sickness absence. The effect of job satisfaction is greater in short term sickness absence than in long term sickness absence. This study has some limitation because of the cross sectional data of Korean Working Conditions Survey. In future, sophisticated statistical analysis may be done with modelling.

• Journal of Korean Academy of Fundamentals of Nursing
• /
• v.14 no.4
• /
• pp.493-499
• /
• 2007

Purpose: This study focused on identifying health promotion behavior of older adults, and factors affecting this behavior. Method: The participants in this survey analysis were Koreans aged 65 or over who had the ability to communicate and could do cognitive thinking, and who consented to participate in the survey. The survey questionnaire included items on demographic characteristics, level of depression, social support, activities of daily living, self-efficacy, and health promotion behavior. Data were analyzed using the SPSS Windows 14.0 program. Results: There were significant differences in health promotion behavior according to religion, economy and health status. Levels of depression, social support and self-efficacy had strong correlations with health promotion behavior. The factors that had the greatest effect on health promotion behavior were social support and self-efficacy. Conclusion: As social support and self-efficacy have been found to affect health promotion behavior in older adults, programs developed to enhance health of older adults should include activities to enhance both social support and self-efficacy.

• Journal of Korean society of Dental Hygiene
• /
• v.19 no.5
• /
• pp.715-729
• /
• 2019

Objectives: This study aimed to validate the moderating effect of oral health on the relationship between perceived health status and health-related quality of life in the elderly and to use this information as primary data to suggest oral health policies for the aged society. Methods: This study included 3,707 subjects aged over 65 years who answered all the variables used in the study model and completed the health questionnaire and screening survey based on the sixth Korea National Health and Nutrition Examination Survey. Baron & Kenny's linear regression analysis using SPSS 22.0 and SPSS Macro Version 3.1 programs was performed to confirm the moderating effect of the number of remaining natural teeth, chewing difficulty, and cardiovascular disease on the relationship between perceived health status and healthrelated quality of life in the elderly. Results: The number of remaining natural teeth, chewing difficulties, and cardiovascular diseases affected the perceived health status of the elderly. As the number of remaining natural teeth increased, the effect of perceived health status on the quality of life in the elderly was buffered. The effect of perceived health status on the quality of life increased with chewing difficulties and the number of cardiovascular diseases. In particular, it was confirmed that chewing difficulties, rather than the number of cardiovascular diseases. had a greater effect on the quality of life in the elderly. Conclusions: Oral health policies and projects are required to ensure oral rehabilitation with dentures and implants and restore chewing function to improve the quality of life of the elderly in Korea.