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윤상헌(Sang-Heon Yoon),임현우(Hyeon Woo Yim),이원철(Won-Chul Lee) 한국역학회 2008 Epidemiology and Health Vol.30 No.1
Cancer screening evaluation will be a important issue in Korea in near future, Bias in cancer screening evaluation is well known by concept, but it is not applied yet using the data from screening program of Korea. So introducing the way how the bias is adjusted will be helpful. This review deals with the type, meaning, the way how the bias is adjusted, and examples. Especially, lead-time bias, length bias and self-selection bias were focused. Adjusting bias is one of the imperative step for epidemiologic analysis. Understanding the background concept and experience using the screening program data will be helpful for estimating the effectiveness of national screening program of Korea.
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만성 변비 환자에서 테가세로드의 효능에 영향을 미치는 요소
최황 ( Hwang Choi ),윤상헌 ( Sang Heon Yoon ),이원철 ( Won Chul Lee ),김주성 ( Joo Sung Kim ),장동경 ( Dong Kyung Chang ),진윤태 ( Yoon Tae Jeen ),김진오 ( Jin Oh Kim ),한동수 ( Dong Soo Han ),김효종 ( Hyo Jong Kim ),설상영 ( San 대한장연구학회 2007 Intestinal Research Vol.5 No.2
Background/Aims: The effect of tegaserod has been found to differ for Caucasian and black patients. The aims of this study were to demonstrate the efficacy of tegaserod on bowel habits and to investigate the factors affecting the efficacy of tegaserod in Korean patients suffering from chronic constipation (CC). Methods: This was an open-label, multi-center, observational study. Analysis of covariance with repeated measures was used to determine the overall effect of treatment and was used to determine the changes in the number of complete spontaneous bowel movements (CSBM) from baseline during the 8-week treatment period. Demographic and baseline characteristics were compared between responders (3 or more CSBM at 8-weeks) and non-responders by the use of multivariate analysis. Results: A total of 1,798 patients were included in the study. Tegaserod treatment resulted in a significant increase in the mean number of CSBM per week over weeks 2-8 from baseline levels (from 1.0 to 3.1 CSBM per week, p<0.0001). Tegaserod treatment was more effective for female patients, younger patients (age less than 65 years), patients with a high Bristol score at baseline, and patients with a short duration of constipation symptoms. Conclusions: Treatment with tegaserod improved bowel movements and more effective in female patients, patients under the age of 65 years, patients with a high Bristol score at baseline, and patients with a short duration of constipation symptoms. (Intest Res 2007;5:170-176)
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김선련(Seon Ryeon Kim),이한성(Han Sung Lee),조재환(Jae Hwan Cho),윤상헌(Sang Heon Yoon) 한국농업정책학회, 한국축산경영학회 2016 농업경영정책연구 Vol.43 No.2
Rural festivals can vitalize the rural regional economy. This study aims to derive the determinants of rural festival visitors’ expenditure, and then provide strategies for increasing visitors’ expenditure which leads to rural vitalization. Questionnaire survey was carried out for visitors of two types of rural festivals, that is, Autumn Gourd Festival and Akyang Persimmon Festival. Using the results of questionnaire survey, the determinants of visitors’ expenditure were derived and their marginal effects were estimated for total expenditure, food expenses, agricultural specialty purchase costs, experience costs, and transportation costs. Tobit model was utilized which is proper for the analysis where the values of dependant variables are partly censored and so constrained. Visitors’ residence were turned out to be the only variable among the demographic characteristics which has significant impact on their expenditure, especially on total expenditure, agricultural specialty purchase costs, and transportation costs. It means that the nearer visitors’ residence is from the festival place, the less their expenditure is. It implies that the measures are need to be prepared to induce the visitors from the far location and at the same time, promote the expenditure of visitors coming from near. Visiting behavioral characteristics such as festival type, accompanying behaviour, number of visiting, and time of stay turned out to have significant impact on expenditure by item as well as total expenditure. In particular, as time of stay gets longer, both total expenditure and expenditure by item increase. It means that how much time visitors stay in festivals is an important determinant of visitors’ expenditure. It also implies that experience programs that induce visitors’ participation by family unit need to be developed so that they spend longer time and spend more money in festivals. On the basis of the results of this study, visiting behavioral characteristics rather than the demographic characteristics of festival visitors should be apprehended more precisely and it will lead to successful festivals.
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신현호(Hyun-Ho Shin),이주희(Ju-Hee Lee),서응철(Eung Cheol Suh),성부근(Bu-Geun Seong),박정아(Jeong-Ah Park),윤상헌(Sang-Heon Yoon) 한국산림휴양학회 2011 한국산림휴양학회지 Vol.15 No.4
탐방로 등급제는 탐방로의 특징에 대하여 사람들에게 알리는 중요한 수단이며, 여가활동으로 탐방을 장려하는데 활용된다. 표준화된"어려움의 정도"혹은 탐방로 등급을 제공함으로써, 탐방객들은 그 탐방로가 그들에게 적절한지를 알 수 있다. 탐방로 등급평가는 초보 탐방객, 특히 장애인이나 아이들과 함께 걷는 사람들을 안심시킬 것이며, 특정 탐방로는 그들에게 적절할 것이다. 그것은 탐방경험이 거의 없는 사람들이 적절한 탐방코스를 선택하도록 하며 그들이 의도하지 않게 잘 모르는 어려운 탐방로를 선택하지 않도록 할 것이다. 본 연구에서는, 다른 나라에서 현재 사용되고 있는 탐방로 등급 시스템을 확인한다. 이 연구를 위해서 사용된 방법은 호주, 아일랜드, 뉴질랜드, 그리고 미국에서의 탐방로 등급제와 관련된 문헌조사, 현장자료조사를 바탕으로 조사하였다. Trail grading systems serve various functions. They inform people about the features of walking to determine trail suitability as well as assisting in the marketing and promotion of walking as a leisure activity. By providing a standardized 'level of difficulty' in trail grading users are able to gauge whether a particular trail provides an appropriate level of difficulty for them. The standardized trail grading system would reassure entry level walkers, particularly the disabled or people walking with children, that a particular trail was suitable for them. It would also assist people with little or no trekking experience to make informed choices to prevent inadvertent or ill-informed use of more difficult trails. The methods used to complete this research included literature reviews and collection of brochures from Australia, Ireland, New Zealand, and U. S. A.
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