Smoking is an important risk factor of diseases. It is also a key factor resulted in death of diseases. Smoking becomes a serious and urgent health issue in public health. In Taiwan, about 25,000 smokers died from smoking and nearly 3,000 non-smokers died from second-hand smoke each year. In average, one person lost his/her life due to smoking in less than 20 minutes. The theory of planned behavior is used to predict the impact of cigarette prices, personal variables, smoking status and other relevant factors on smoking cessation intention of the perspective of adult people in Chiayi City.
A total of 1,136 valid questionnaires were collected. Results showed that women, married, and high-educated, get higher scores on smoking knowledge, attitudes, perceived behavioral control and behavioral intention, but there was no difference in subjective norms and smoking prices in personal variables. Non-smokers had higher scores in smoking knowledge, attitudes, subjective norms, behavioral control, behavioral intention, and smoking cessation behavior than smokers or those who tried to smoke. Consistent with the theory, knowledge, attitudes, subjective norms, perceptual behavior control, cigarette prices and behavioral intention could well predict smoking cessation behavior, and R2 of attitude, behavioral intention and behavior are 0.290, 0.577 and 0.655 respectively. The overall predictive ability of model reached 65% for smoking cessation behavior.
In summary, raising cigarette price had a positive effect on people's intention to quit smoking, and can promote the behavior of smoking cessation. To reenforce the tobacco products knowledge of adults in Chiayi City can promote smoking cessation attitude. Enhancing people’s attitude, subjective norms and perceptual behavior control could increase smoking cessation intention, and thus promote cessation behavior. The study results will help the central competent authority and the local health centers to develop a smoke prevention strategy. Intervention should focus on increasing adults’ perceptions of tobacco products knowledge and attitude. A long-term tobacco tax policy would effectively increase smokers' motivation to quit.