<![CDATA[Mastitis is one of the problems that may occur in breastfeeding mothers and can be prevented through proper breast care. Mothers' knowledge of breast care is an important factor in preventing mastitis, so appropriate health education media are needed to improve breastfeeding mothers' knowledge. This study aimed to determine the effect of audiovisual and leaflet educational media on breastfeeding mothers' knowledge of breast care and to compare the effectiveness of the two media in preventing mastitis. This quantitative study used a quasi-experimental design with a two-group pretest-posttest design. The sample consisted of 75 breastfeeding mothers, comprising 37 respondents in the audiovisual group and 38 in the leaflet group, selected using total sampling. Data were collected using a knowledge questionnaire and analyzed using the Paired Sample T-Test and Independent Sample T-Test. The results showed that audiovisual education increased the average knowledge score by 28.52 points, while leaflet education increased it by 26.19 points. The Independent Sample T-Test showed a t-value of 2.291 with p=0.025 (p<0.05), indicating a significant difference in effectiveness between the two media, with a greater increase in the audiovisual group. It can be concluded that both audiovisual and leaflet media were effective in increasing breastfeeding mothers' knowledge of breast care for mastitis prevention, and audiovisual media was more effective than leaflet media.]]>
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