Main Article Content
Study in undergraduation has freedom, easy to get over various media that led students have risks of sexual behavior.This cross-sectional survey research had aimed to study sexual behaviors and factors influencing sexual behavior among students in one higher educational institution in the Phitsanulok. The samples were 358 students, aging between 18-25 years, selected by Stratified random sampling. Data were collected through self-administered questionnaires during 23rd December 2015 to 5th January 2016. The data were analyzed by frequency, percentage, mean, standard deviation, Chi-square analysis and multiple logistic regressions. The results were found that 66.2 percent of students got high risk of sexual behaviors and 95.8 percent of students realized about sexual risk perception in a satisfactory level. The factors influencing sexual behavior among students were perceptions of information on the prevention of sexually transmitted diseases and expenditures per month. Students who had not perceived enough information were likely to be 7.98 times higher sexual risk behaviors than students with good information perception. The students who had insufficient income to spend were likely to have 2.06 times higher sexual risk behavior than students who earned just enough to pay.