Yi-Wen Tsai

Prof. Yi-Wen Tsai

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Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 August 2010 in BMC Health Services Research
Verified
Journal Article
Open access
PDF file
YLYue-Chune Lee
Yue-Chune Lee
YHYu-Tung HUANG
Yu-Tung HUANG
YTYi-Wen Tsai
Yi-Wen Tsai
SHShiuh-Ming Huang
Shiuh-Ming Huang
KKKen N Kuo
Ken N Kuo
ENEllen Nolte
Ellen Nolte
Background: Taiwan established a system of universal National Health Insurance (NHI) in March, 1995. Today, the NHI covers more than 98% of Taiwan's population and enrollees enjoy almost free access to healthcare with small co-payment by most clinics and hospitals. Yet while this expansion of coverage will almost inevitably have improved access to health care, however, it cannot be assumed that it will necessarily have improved the health of the population. The aim of this study was to determine whether the introduction of National Health Insurance (NHI) in Taiwan in 1995 was associated with a change in deaths from causes amenable to health care. Methods: Identification of discontinuities in trends in mortality considered amenable to health care and all other conditions (non-amenable mortality) using joinpoint regression analysis from 1981 to 2005. Results: Deaths from amenable causes declined between 1981 and 1993 but slowed between 1993 and 1996. Once NHI was implemented, the decline accelerated significantly, falling at 5.83% per year between 1996 and 1999. In contrast, there was little change in non-amenable causes (0.64% per year between 1981 and 1999). The effect of NHI was highest among the young and old, and lowest among those of working age, consistent with changes in the pattern of coverage. NHI was associated with substantial reductions in deaths from circulatory disorders and, for men, infections, whilst an earlier upward trend in female cancer deaths was reversed. Conclusions: NHI was associated in a reduction in deaths considered amenable to health care; particularly among those age groups least likely to have been insured previously.

2 September 2005 in BMC Health Services Research
Verified
Journal Article
Open access
PDF file
TCTu-Bin Chu
Tu-Bin Chu
TLTsai-Ching Liu
Tsai-Ching Liu
CCChin-shyan Chen
Chin-shyan Chen
YTYi-Wen Tsai
Yi-Wen Tsai
WCWen-Ta Chiu
Wen-Ta Chiu
Background: Unequal geographical distribution of medical care resources and insufficient healthcare coverage have been two long-standing problems with Taiwan's public health system. The implementation of National Health Insurance (NHI) attempted to mitigate the inequality in health care use. This study examines the degree to which Taiwan's National Health Insurance (NHI) has reduced out-of-pocket medical expenditures in households in different regions and varying levels of income. Methods: Data used in this study were drawn from the 1994 and 1996 Surveys of Family Income and Expenditure. We pooled the data from 1994 and 1996 and included a year dummy variable (NHI), equal to 1 if the household data came from 1996 in order to assess the impact of NHI on household out-of-pocket medical care expenditures shortly after its implementation in 1995. Results: An individual who was older, female, married, unemployed, better educated, richer, head of a larger family household, or living in the central and eastern areas was more likely to have greater household out-of-pocket medical expenditures. NHI was found to have effectively reduced household out-of-pocket medical expenditures by 23.08%, particularly for more affluent households. With the implementation of NHI, lower and middle income quintiles had smaller decreases in out-of-pocket medical expenditure. NHI was also found to have reduced household out-of-pocket medical expenditures more for households in eastern Taiwan. Conclusion: Although NHI was established to create free medical care for all, further effort is needed to reduce the medical costs for certain disadvantaged groups, particularly the poor and aborigines, if equality is to be achieved.

24 March 2005 in Health Economics
Verified
Journal Article
Closed access
PDF file
YTYi-Wen Tsai
Yi-Wen Tsai
CYChung‐Lin Yang
Chung‐Lin Yang
CCChin‐Shyan Chen
Chin‐Shyan Chen
TLTsai‐Ching Liu
Tsai‐Ching Liu
PCPei‐Fen Chen
Pei‐Fen Chen

1 August 2009 in Drug Safety
Verified
Journal Article
Closed access
PDF file
FHFei-Yuan Hsiao
Fei-Yuan Hsiao
WHWeng-Foung Huang
Weng-Foung Huang
YWYu-Wen Wen
Yu-Wen Wen
PCPei-Fen Chen
Pei-Fen Chen
KKKen N. Kuo
Ken N. Kuo
YTYi-Wen Tsai
Yi-Wen Tsai

1 March 2003 in Tobacco Control
Verified
Journal Article
Open access
PDF file
YTYi-Wen Tsai
Yi-Wen Tsai
HSH-Y Sung
H-Y Sung
CYC-L Yang
C-L Yang
SSS-F Shih
S-F Shih
Objective: Since market liberalisation in 1987, the Taiwan Tobacco and Wine Monopoly Bureau (TTWMB) annual statistics indicate that both the demand for imported cigarettes as well as the number of seized smuggled packs have increased with an average revenue loss of NT$4942 million over the past 15 years. The NT$10 average increase in cigarette prices after Taiwan entered the World Trade Organization (WTO) and the implementation of the Tobacco and Alcohol Tax Law in 2002 are forcing policy makers to examine smuggling even more closely. This study evaluates factors that affect an individual smoker’s decision to purchase smuggled cigarettes, particularly when faced with higher prices. Design: 437 male smokers of imported cigarettes were drawn from a national interview survey on cigarette consumption, which the Division of Health Policy Research at the National Health Research Institutes conducted during the year 2000. Multiple logistic regression models were used to analyse the behaviour of purchasing smuggled cigarettes with respect to demographic factors, economic factors, smoking behaviour, and other variables. Results: Cigarette price was the driving factor most closely linked to the purchase of smuggled cigarettes—a 1% increase in cigarette price raised the likelihood of purchasing smuggled cigarettes at least 2.60 times (95% confidence interval (CI) 1.08 to 6.26). Smokers who spent more than NT$1000/month on cigarettes were twice as likely to purchase smuggled cigarettes as those who spent less than NT$1000 (odds ratio (OR) 2.34, 95% CI 1.48 to 3.70). Betel nut chewers were more likely to purchase smuggled cigarettes (OR 1.80, 95% CI 1.09 to 2.90). Smokers who opposed cigarette taxation policy were 1.69 times more likely to buy smuggled cigarettes. Personal income was not significantly associated with smuggled cigarettes purchases. Conclusions: This study evaluates what causes smokers to purchase smuggled cigarettes. We have determined that cigarette price is the most important factor and that betel nut vendors are the main suppliers. Our study provides policy makers with information that can help them develop effective strategies to curb cigarette smuggling after Taiwan’s recent cigarette tax reform, which has increased cigarette prices.

YTYi-Wen Tsai
Yi-Wen Tsai
YWYu-Wen Wen
Yu-Wen Wen
CTChia-Rung Tsai
Chia-Rung Tsai
TTTzu-I Tsai
Tzu-I Tsai
Background: Psychology and addiction research have found that cigarette smokers react with subjective and automatic responses to stimuli associated with smoking. This study examines the association between the number of cigarettes smokers consume per month and their response to cues derived from peer and psychological distress. Methods: We studied 1,220 adult past and current smokers drawn from a national face-to-face interview survey administered in 2004. We defined two types of cues possibly triggering a smoker to have a cigarette: peer cues and psychological cues. We used ordinary least square linear regressions to analyze smoking amount and response to peer and psychological distress cues. Results: We found a positive association between amount smoked and cue response: peer cues (1.06, 95%CI: 0.74-1.38) and psychological cues (0.44, 95%CI = 0.17-0.70). Response to psychological cues was lower among male smokers (–1.62, 95%CI = –2.26- –0.98), but response to psychological cues were higher among those who had senior high school level educations (0.96, 95%CI = 0.40-1.53) and who began smoking as a response to their moods (1.25, 95%CI = 0.68-1.82). Conclusions: These results suggest that both peer cues and psychological cues increase the possibility of contingent smoking, and should, therefore, be addressed by anti-smoking policies and anti-smoking programs. More specifically, special attention can be paid to help smokers avoid or counter social pressure to smoke and to help smokers resist the use of cigarettes to relieve distress.