目的：探討戒菸計劃介入對台灣青少年學生在香菸的危害認知，戒菸的態度、行為，及自我效能上之立即性、持續性效果的影響評估。方法：200名目前有吸菸行為的學生為標本，區分為實驗組與對照組。實驗組進行16週的戒菸計劃介入課程，俟課程結束後二組立即接受後測，以瞭解戒菸計劃介入後所產生的立即性影響效果，在第32週二組再進行後後測，追蹤評量其持續性效果。結果：戒菸計劃介入後對於香菸的危害認知，戒菸的態度、行為，及自我效能上之前測、後測、後後測得分都有顯著性差異，表示戒菸計劃產生明顯的立即性、持續性效果。結論：本研究證實若無持續性戒菸計劃，會因時間性而降低其效能。健康教育能更增強和持續戒菸計劃的成效。

Objectives. The objective of this study was to evaluate the short and long term effect of a smoking cessation program for adolescents on their knowledge, attitude, practice, and self-efficacy with regard to quitting smoking. Methods. Two hundred current smokers were sampled and divided into an experimental group and a control group. The experimental group participated in a sixteen-week smoking cessation class. Both groups took post-tests immediately after intervention in order to evaluate the immediate effects. The follow-up tests were administered to evaluation long-term effect at the 32nd week. Results. We found a significant difference in knowledge, attitude, practice, and self-efficacy in the participants. There were significant differences in immediate and retained improvements after the quit smoking program. Conclusion. If the quit smoking program is not employed continuously, due to a prolonged time interval, the efficacy could be reduced. Health education reinforces and has a constant effect on the quit smoking program.