Sexually Transmitted Infections (STIs) remain a significant global health challenge among adolescents. Promotive and preventive efforts by providing health education are expected to reduce the spread of STIs among adolescents. Improving the knowledge of class XII students at a vocational school in Sidoarjo regarding sexually transmitted infections. he method of increasing knowledge in preventing STIs in adolescents was carried out by providing health education through PowerPoint media and leaflets to 42 students in grade XII at a vocational school in Sidoarjo City. All participants were given pre-test and post-test questionnaires to evaluate the effectiveness of health education on knowledge.Health counseling was conducted on January 24, 2025. The majority of participants were female students aged 16-18 years. The results of the Wilcoxon Signed Rank Test showed a significant value (p <0.001), which indicates that health counseling has a significant effect on increasing adolescent knowledge about STIs. Health education has proven to be effective in increasing and equalizing the level of knowledge of adolescents regarding STIs, where the educational intervention provided is able to change the understanding of participants in a better and more equitable direction.
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Dewanti et al. (2025) studied this question.
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