SUMMARY
Background: Hypertension is a disease that rarely shows severe complaints but can lead to severe complications because it is also known as a silent killer disease. Objective: To determine the factors associated with the behavior of preventing complications in hypertension. Methods: This study used a quantitative research design with a cross-sectional study design. The number of samples in this study was 272 patients with hypertension using the purposive sampling technique. The questionnaire used in this study was a knowledge questionnaire about hypertension and a complication prevention behavior questionnaire. Analysis of data using the Spearman Rank Test correlation. Results: The results of data analysis showed the relationship between the level of knowledge about hypertension and the behavior to prevent complications of hypertension obtained a value of ? value of 0.000<0.05. Conclusion: Knowledge as the domain of behavior is related to the prevention of complications in hypertension. Someone who has good knowledge is smarter in managing his pattern and lifestyle, it is proven by the majority of having good behavior in terms of preventing complications of hypertension. Suggestion: Providing continuous education as a promotive and preventive effort regarding the prevention of hypertension can increase patient knowledge so that it is expected to reduce the serious risk of hypertension complications. Keywords: Knowledge. Preventive Behavior. Hypertension Complications