• Physical Therapy Korea
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• v.6 no.3
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• pp.82-93
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• 1999

Stroke is a serious disease despite recent improvement in medical and surgical treatment. Hence, identification of modifiable risk factors for stroke is important. This case-control study was done to demonstrate that relationship between smoking, alcohol consumption, obesity, perception of saltness and the incidence of stroke and to identify that smoking, alcohol consumption, obesity and perception of saltness, after adjusting for age, hypertension. A structured interview was carried out from April 15, 1996 to May 3, 1996 in Yonsei Medical Center. The study group consisted of 59 neurologically confirmed stroke patients as the study group and 59 non-stroke patients as controls. Analysis of the data was done by means of ${\chi}^2$-test and logistic regression analysis. The results were as follows. In the study group: 1) Hypertension in males had a 10.2 odds ratio (p<0.05), cardiovascular disease in females had a 11.3 odds ratio (p<0.05) and a farnily history of stroke in males had a 3.1 odds ratio (p<0.05). 2) Females smoking one or more cigarettes had a 8.3 odds ratio (p<0.1), but males had no direct relationship with odds ratio of 1.5 (non-significant). 3) Alcohol consumption in males had a 0.4 odds ratio, and in females had a 0.8 odds ratio. The odds ratio was decreased in alcohol consumption group (non-significant). 4) Males with more than 20 cigarettes pack-years history had a 2.5 odds ratio (p<0.05), more than 25 Body Mass Index had a 3.1 odds ratio (p<0.05) and more than 220 ml ethanol weekly consumption had a 1.5 odds ratio (non-significant). 5) Female smokers had a 8.3 odds ratio (p<0.1), drinkers a 0.8 odds ratio and more than 25 Body Mass Iidex, a 43.1 odds ratio (p<0.05). 6) Females without saltness perception from a 0.5% salt solution had a 6.8 odds ratio (non-significant). 7) By logistic regression analysis independent risk factors for stroke in males were found to be hypertention, age, and obesity. The study was limited because number of subjects was too small for practical implications. However, like as other results, this study suggest that people should be advised to control hypertension, and obesity since these carry a risk of stroke.

• Journal of Korean society of Dental Hygiene
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• v.9 no.3
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• pp.507-521
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• 2009

This study purposed to analyze dental hygienists' job satisfaction according to their clinical career as an effort to enhance their job satisfaction and quality and to provide basic materials for dental hygienists' effective job performance. For this purpose, we surveyed 120 dental hygienists working at dental hospitals and clinics in Busan during the period from the $1^{st}$ February to $31^{st}$ March 2009 by using a self administered questionnaire. Job satisfaction was measured using a 5 point Likert scale ranging from 'Absolutely yes' (5 points) to 'Yes' (4), 'So so' (3), 'No' (2), and 'Not at all' (1), and a high score indicates high degree of satisfaction. When it testd the reliability of the job satisfaction scale was tested, Cronbach's Alpha (${\alpha}$) was 0.85 which indicates the instrument is sufficiently reliable. Data collected were analyzed with SPSS. We performed frequency analysis in order to examine the subjects' demographical characteristics, and Chi square and one way ANOVA to examine their perception of their job, job satisfaction, and their aptitude and status as a dental hygienists' according to clinical career. The results of this study were as follows. 1. The longer clinical career the dental hygienists had, the more they thought that they had aptitude as a dental hygienist (p<0.05). 2. The dental hygienists' turnover intention was different according to clinical career (p<0.01). 3. The longer clinical career the dental hygienists had, the more satisfied they were when they were working at a dental hospital or clinic equipped with convenience facilities (change room, lounge, etc.) (p<0.01). 4. The longer clinical career the dental hygienists had, the more power to make decisions they had and the more acknowledgement and trust they received from dentists (p<0.01). 5. Satisfaction with duty coordination was low in general, but it grew higher with increase in clinical career (p<0.01). 6. The longer clinical career the dental hygienists had, the more satisfied they were with patients' appreciation of their treatment (p<0.01). In addition, their time and opportunities to discuss with dentists were different according to clinical career, and their satisfaction with the items was higher when their clinical career was long (p<0.01). 7. As to their perception of dental hygienists' potential for development, they generally believed that they had potential for future growth with the expansion of their work scope (M=3.73). The longer clinical career the dental hygienists had, the more satisfied the more power to make decisions they had and the more acknowledgement and trust they received from dentists and their time and opportunities to discuss with dentists when they were working at a dental hospital or clinic equipped with convenience facilities (change room, lounge, etc.). The longer clinical career the dental hygienists had, the more they thought that they had aptitude as a dental hygienist. In conclusion, the longer clinical dental hygienists' Career had, satisfaction was able to take a highness to a dental hygienist occupation.

• Journal of the Society of Disaster Information
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• v.7 no.2
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• pp.161-171
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• 2011

This research puts the purpose in elucidating the effect of participation types of leisure activity and leisure restraints on life quality. To achieve research purpose, questionnaire survey was conducted on 200 subjects who are engaged in private guard companies with ages over 20. Using the collected data, frequency analysis was conducted in order to identify demographic characteristics with SPSS/WIN 17.0V program. In addition, multiple regression analysis was conducted for solving research questions. As a result, sports related participation type had a positive effect on time constraint factor. Meanwhile, hobby related participation type had a positive effect on time and cost constraint, participation type of watching has a positive effect on individual and social constraint. Tour and play related participation type had a positive effect on individual constraint factor. Meanwhile participation type of sociality had a positive effect on individual constraint and hobby factor, but had a negative effect on familial and social constraint. Sports related participation type had a positive effect on social relationship factor. Participation type of watching and play related participation type had a negative effect on family relationship. Finally, time constraint factor had a positive effect on family relationship, and cost constraint factor had a positive effect on entire quality of life. Individual and family constraint factors had a negative effect on leisure relationship factor. Also, social constraint factor had a positive effect on family relationship, but had a negative effect on leisure relationship.

• Korean Journal of Occupational Health Nursing
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• v.10 no.1
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• pp.41-54
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• 2001

This study was designed to assess the relationship between occupational stress and health status in a study group of 197 workers employed in four newspaper publishing companies, using a self-adminstrative questionnaire. The types of occupation of them were reporters(79), clerical workers(54), and engineers (64). The studies on workers' health have been focused mainly on the physical, chemical, and biological diseases in our country. Therefore, the study of mental health, especially of occupational stress, is to be carried out. I consider stress as a factor having an effect on the health status of the newspaper employees, who have been well known to have high stress due to time pressures. I expect that this research will be helpful not only for understanding of health status by occupation, but also for making clear the issues that have been raised continuously from the previous researches. The results of this study are as follows; 1. The mean values of stress by occupation were statistically significant; the reporters had the highest stress symptom scores, and the engineers had the lowest levels of stress. The mean values of stress symptoms were higher in the workers who had long working hours. 2. The health status by occupation showed significant differences in gastrointestinal systems and in depression. The clerical workers were healthier than the engineers in gastrointestinal systems, and the reporters were more depressed than the engineers in depression. 3. The health status by the general characteristics, there was a statistical significance as for a gender, marital status, and absenteeism in the gastrointestinal systems. The men, the married, and the workers who had not been absent were more healthy. Only absenteeism had an effect on the problems in optical-dermal systems and in oro-fecal systems. Gender, marital status, absenteeism, and working hours were related with health status : the men. the married, the workers who had not been absent, and the workers who had longer working hours were more healthy. In mental stability, gender had a significant effect : the men were more healthy than the women. In general condition, the men, the older, the married, and the workers who had not been absent were more healthy. 4. Stress level had an effect on the health status in the respiratory systems, optical-dermal systems, oro-fecal system, depression, mental stability, general condition, and health condition. The workers who perceived more stress had more problems in their health status. 5. In the results of the multiple regression analyses, age in the respiratory systems, absenteeism in the optical-dermal systems, occupation and absenteeism in the gastrointestinal systems and in the oro-fecal systems, gender in depression and in mental stability, gender, age, absenteeism, and working hours in the general condition, absenteeism in the health condition had an effect on the health status of the workers.

• Communications for Statistical Applications and Methods
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• v.13 no.3
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• pp.479-490
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• 2006

Francis Gallon (1822-1911) introduced the term 'regression' and 'correlation' in the study on human inheritance of the stature from parents to their children. In almost every statistics textbook, superficial attentions have been given to him just as the inventor of the term 'regression'. Rereading his books and papers, we investigated problems he had tried to solve and the methods he had used to solve the problems. In addition, we tried to find the motivation that had led Gallon to take attention to the variation rather than the central tendency of observational data that had fascinated his forerunner Adloph Quetelet.

• Journal of Chest Surgery
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• v.15 no.3
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• pp.316-320
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• 1982

We had operated 5 cases of residual ventricular septal defect after primary repair of isolated ventricular septal defect from 1975 to 1981. Three were male and two were female. Their ages ranged from 7 to 25 years old. In 4 cases previous patch was detached and one case had left ventricular - right atrium communication. They had had residual symptoms after primary operation and chest x-ray showed cardiomegaly. Cardiac catheterization was performed in all cases. Residual left to right shunt was more than 1.4: 1 with pulmonary hypertension. Their postoperative course were uneventful and long term follow up revealed that they were good health until one to 4 years.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1997.04a
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• pp.343-353
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• 1997

This study had been performed to estimate for vibration characteristics of the Power Motor Coaches with Diesel-Hydraulic Drive and to secure a dynamic characteristic construction technology of another rolling stock. Air bags, springs and dampers of Bogie are carefully reviewed in order to improve ride quality. Dynamic analysis had been performed using VAMPIRE program, which had been developed by BRR, and the analysis results had been compared with test data to verify.

• Journal of Chest Surgery
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• v.18 no.4
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• pp.859-866
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• 1985

The characteristic features of myasthenia gravis, which are weakness of voluntary muscle and easy fatigability, result from defective neuromuscular transmission caused by an autoimmune response to acetylcholine receptor. Recently, we performed two cases of thymectomy for the treatment of myasthenia gravis, one was 50 year old man who had malignant thymoma and the other was 19 year old girl who had benign thymic hyperplasia. The former had long duration of symptoms, and showed poor postoperative result. The latter had short duration of symptoms, and showed complete remission. Herewith, we suggest that early thymectomy can give the clinical assets for myasthenia gravis. So we report these two experiences with review of literatures.

• Journal of Korean Society of Rural Planning
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• v.26 no.1
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• pp.77-88
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• 2020

This study had comparatively analyzed the influence factors of the farm village business on the local farmhouses centered on the level of importance and the level of performance. For this, a questionnaire survey had been conducted with 350 local residents who had participated in the Rural Field Forum of 14 villages, including Gyeongsangnam-do, Gyeongsangbuk-do, Chungcheongnam-do, Chungcheongbuk-do, Jeollabuk-do, etc. Excluding the insincere survey questionnaires, the final 232 people had been analyzed. As a result of the analysis of this study, the factors that have the influences on the diverse, rural areas had been compressed into the three factors of the lodging and the program, the special, rural area products, and the transportation and the accessibility. In the level of importance-level of performance analysis, it had been analyzed that the special, rural area products must maintain the continuity, that the transportation accessibility must avoid the excessive endeavor, and that the lodging program had a low priority order. Therefore, it can be said that it is necessary to concentrate the capability of the rural village business in the direction of developing the local specialties in the future. Next, after dividing the level of performance and the level of importance into the two groups each, the multiple group path analysis had been carried out. As a result, in the result of the analysis of the path that has an influence on the economic factor, the path coefficient of the level of importance of the transportation accessibility -> profit increase was 0.195+0.064 and the path coefficient of the level of performance of the transportation accessibility -> profit increase was 0.251+0.074. Therefore, both of them had the statistically significant amounts of the influences. This suggests that the transportation accessibility is an important element of the profit increase of the region. As a result, in the future, the research on the urban and rural exchanges using the even more convenient and inexpensive transportation means is needed. Most of them need the voluntary effort of the residents for being able to creatively develop and sell the native, agricultural, specialty products that are petty. Also, the rural areas need the diversities of the lodging programs and the recreational programs, a convenient reservation system, and the development of a unique tourism experience program. In the future, the researches that had been advanced in the even more detailed domain that is related to these factors are highly expected. Also, the analyses that had been carried out with even more areas and subjects as the targets are needed.

• Korean Journal of Health Education and Promotion
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• v.26 no.3
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• pp.85-96
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• 2009

Objectives: The purpose of this study was to assess input for health promoting schools (HPS), and to evaluate HPS based on WHO's guidelines through school characteristics, and to identify the schools' need among six areas of HPS. Methods: A stratified and random cluster sampling design was used to obtain a cross-sectional sample. A total of 59 elementary, middle and high schools in Seoul and Gyeonggi areas were included, and 333 teachers (males 40.6%, females 59.4%) participated in this survey. A self-reported questionnaire consisted of ten items for input for HPS, 50 items for the evaluation of HPS and three items for the schools' needs among six areas of HPS. Data was analyzed through a t-test, ANOVA, and a Duncan test. Results: The mean score of input for HPS was 48.5 ($\pm$15.3). Elementary schools had higher mean scores of input than middle schools. The mean score of schools with a management committee was higher than those schools without it. The schools which had meetings on health issues had higher mean scores. The mean score for HPS was 76.8 ($\pm$9.4): the area of "School Physical Environment" had the highest score (80.0$\pm$10.9), and the area of "Community Relationships" had the lowest score (67.1$\pm$13.9). Elementary schools had higher mean scores of HPS than middle and high schools. The schools which had less than nine classes and more than 31 classes had higher mean scores. The mean scores of schools with less than 340 students and more than 1201 students had higher. The schools which had meetings on health issues had higher mean scores. The same results were found on six areas of HPS. The teachers responded that the areas of "School Health Policy", "The School Physical Environment", and "Health Service" should be supported among the six areas of HPS. Conclusion: Based on these results, more concerns and support for school health are necessary. Middle schools should give more regard on the development of HPS. For comprehensive school health promotion, all six areas of HPS should be equally supported.