Hypertension or increased blood pressure is often referred to as the silent killer since it usually does not show significant signs and symptoms. Most sufferers do not realize that they suffer from hypertension. Based on Riskesdas data in 2007, the prevalence of hypertension in the population aged 18 years and over in Indonesia was 31.7%. Yogyakarta is one of the provinces where the prevalence of hypertension is higher than the national standard of 35.8%. Therefore, the increasing prevalence of hypertension in adolescents requires preventive measures, one of which is changing the wrong perception among teenagers about hypertension. This study aims to determine the effect of health education through audiovisual media on adolescent perceptions. This research is quasi-experimental. Experimental tests were conducted on 96 respondents. This research employed pre-test and post-test on each variable through a questionnaire, namely the benefits and barriers. Data analysis used the descriptive method to identify the description of the respondents. Furthermore, the quantitative analysis used Mann-Whitney and Wilcoxon. The effect of health education through audiovisual media on adolescents' perceptions of the benefits of hypertension prevention behavior was found to be p > 0.05. Likewise, the variable inhibition of hypertension prevention behavior obtained p > 0.05. Although there was a change in the perception score from less good to good in the respondents, it was not statistically significant. The use of audiovisual media as health education has not significantly influenced adolescent perceptions about the benefits and barriers to hypertension prevention behavior.
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