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Smoking is one of the public health problems in Indonesia by remembering that smoking is one of the main risk factors of several chronic diseases that can lead to death. Smoking among adolescents is caused by curiosity or trying out new experiences, trying to eliminate boredom, wanting to be considered more male and want to be accepted in the group. The purpose of this study was to analyze the effect of the use of whatsapp social media and booklets on knowledge about cigarettes and student attitudes at SMA Negeri 13 Medan. This research is a quasi experimental study. The study population was all students of SMAN 13 Medan class 11 in 2018/2019 with 128 male students and the sample was 21 male students for the social media group WA) and 21 male students for the booklet group. Data analysis methods used in this study consisted of univariate and bivariate analyzes. The results were obtained as follows: 1) The use of whatsapp social media affected the knowledge of cigarettes and student attitudes, 2) The use of booklet media influenced the knowledge of cigarettes and student attitudes. From the research results obtained, suggestions are given that students can increase their knowledge through a number of ways including finding information through internet media or books relating to smoking and smoking as well as the dangers posed by smoking so that they can understand it and change attitudes towards more and produce good behavior. also.

PENGARUH PENGGUNAAN MEDIA SOSIAL WHATSAPP DAN BOOKLET TERHADAP PENGETAHUAN DAN SIKAP SISWA TENTANG ROKOK DI SMA NEGERI 13 MEDAN