| Summary: | 碩士 === 高雄醫學大學 === 口腔衛生科學研究所碩士在職專班 === 98 === Background: The Global Youth Tobacco Survey（GYTS） in 2004-2005 point that the vocational school smoking prevalence higher than general senior high school (15.9＞10.1). Smoking prevalence of girls in vocational school and general senior high school was almost higher than adult females'' smoking rate. In this study, age level of students is similar with vocational and general senior high school.
Objectives: To explain the correlation between adolescents'' intention to quit smoking and attitude, subjective norm, and perceived behavior control, applying principal components of Theory of Planned Behavior (TPB).
Methods: A cross-sectional study was conducted among 203 smoked students in a junior college in southern Taiwan, in 2009. Self-report questionnaires were given to junior college students. In total, 799 schoolchildren aged 16-18 responded. Pearson correlation and linear regression model were used to analyze the association between intention to quit smoking and TPB components.
Results: The results of this study found that attitude, subjective norm perceived behavior control were positive significant correlated to students'' intention to quit smoking. The respondents'' attitudes were negative correlated with the sum of the products of behavioral belief multiplied by outcome evaluation （r=-0.17）, and perceived behavior control was correlated with control belief multiplied by power（r=-0.20）. The respondents'' subjective norm were positively correlated with the sum of the products of normative belief multiplied by motivateion to comply （r=0.52）.Hierarchical regression analyses showed that the best predictors for intention to quit smoking were perceived behavior control with 23.7 % of total variance explained (p<.01). Moreover, smoking status and quitting experiences could also explained 15.2 % of the total variance in individual intention to quit smoking.
Conclusions:In the consideration of social demographic factors, smoking status, smoking experiences and the theory of reasoned action, perceived behavior control is still valid to explain the intention to quit smoking among adolescent smokers. Therefore, to enhance personal control ability of the to impede cessation environment to improve the quit smoking intention.
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