1. population and sample 1.1 population. The population used in this study as a high school student who loves both men and women. Government schools educational service area office 1 district, Surat Thani province, Amphoe Muang, Surat Thani, both smokers and non-smokers. The school number 6 in number of 5,725 people. 1.2. The sample in this study was derived by the following steps.1. survey the population of high school students, both male and female. Government schools educational service area office, Surat Thani, Amphoe mueang Surat Thani District 11.2. sample size calculated from the formula, the Hakone-Yama.3. sampling using simple random sampling method.
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