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Discrete choice experiment of smoking cessation behaviour in Japan

¹ Faculty of Economics, Konan University, Kobe, Japan
² Graduate School of Economics, Kyoto University, Kyoto, Japan

Correspondence to:
Dr Takanori Ida
Graduate School of Economics, Kyoto University, Yoshida, Sakyo, Kyoto 606-8501, Japan; ida{at}econ.kyoto-u.ac.jp

Background: In spite of gradual increases in tobacco price and the introduction of laws supporting various anti-tobacco measures, the proportion of smokers in Japan’s population is still higher than in other developed nations.

Objective: To understand what information and individual characteristics drive smokers to attempt to quit smoking. These determinants will help to realise effective tobacco control policy as a base for understanding of cessation behaviour.

Method: Discrete choice experiments on a total of 616 respondents registered at a consumer monitoring investigative company.

Results: The effect of price is greater on smokers with lower nicotine dependence. For smokers of moderate and low dependency, short term health risks and health risks caused by passive smoking have a strong impact, though the existence of penalties and long term health risks have little influence on smokers’ decisions to quit. For highly dependent smokers, non-price attributes have little impact. Furthermore, the effects of age, sex and knowledge are also not uniform in accounting for smoking cessation.

Conclusion: Determinants of smoking cessation vary among levels of nicotine dependency. Therefore, how and what information is provided needs to be carefully considered when counselling smokers to help them to quit.

Abbreviations: DCE, discrete choice experiment; FTND, Fagerstrom test for nicotine dependence

Keywords: smoking cessation; discrete choice experiment; nicotine dependence; mixed logit model