Koyin Chang

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OBJECTIVES Diabetes is one of the leading causes of death in Taiwan. However, to date,no study has investigated the patient profile in this country.Therefore,this study aimed to analyse health condition,health-related quality of life and associated financial burden of people with diabetes in Taiwan. STUDY DESIGN A cross-sectional survey was conducted(More)
The topic of suicide has long been an important socioeconomic issue studied in many countries. Suicides inject an atmosphere of unrest into society, and media attention furthers that social uneasiness. From the viewpoint of economics and management, suicide is a waste of human resource: it decreases the labor force in society and deteriorates human capital.(More)
Segmenting lung fields in a chest radiograph is essential for automatically analyzing an image. We present an unsupervised method based on multiresolution fractal feature vector. The feature vector characterizes the lung field region effectively. A fuzzy c-means clustering algorithm is then applied to obtain a satisfactory initial contour. The final contour(More)
Multiple alcohol control policies have been enacted since the early 1980s to keep drunk drivers off the roads and to prevent more alcohol-related traffic fatalities. In this paper, we analyze nine traffic policies to determine the extent to which each policy contributes to effective alcohol-related fatality prevention. Compared with the existing literature,(More)
To understand the impact of drinking and driving laws on drinking and driving fatality rates, this study explored the different effects these laws have on areas with varying severity rates for drinking and driving. Unlike previous studies, this study employed quantile regression analysis. Empirical results showed that policies based on local conditions must(More)
Cervical cancer is one of the leading causes of cancer deaths in Taiwan. To investigate the disease cost and then raise awareness of the importance of screening for cervical cancer and promote early detection, this paper employs contingent valuation and willingness to pay (WTP) method to study how health-related quality of life, disease severity, and(More)
OBJECTIVES Chronic Obstructive Pulmonary Disease (COPD) is one of the fastest growing causes of death worldwide. However, few studies, if any, have been conducted that have investigated patient profiles in Asia. This paper analyzes patient willingness to pay (WTP) as a function of patient disease severity, health-related quality of life (HRQL), and smoking(More)
BACKGROUND Taiwan has some of the strictest alcohol-related driving laws in the world. However, its laws continue to be toughened to reduce the ever-increasing social cost of alcohol-related harm. AIM This study assumes that alcohol-related driving laws show a spillover effect such that behavioral changes originally meant to apply behind the wheel come to(More)
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