Background: Menarche, or the first menstrual experience, is one of the most significant events in early adolescence. Many adolescent girls experience shock and confusion during their first menstruation, largely due to limited knowledge about their own physiology, particularly regarding menstruation. Insufficient understanding of reproductive health at the onset of menarche may increase the risk of anemia, unsafe sexual behaviors, unintended pregnancy, unsafe abortion, and sexually transmitted infections (STIs), including HIV/AIDS. Methods: This quantitative study employed a cross-sectional design and was conducted at MIN 1 Bengkulu City with a total sample of 74 fifth-grade female students who had not yet experienced menarche, selected using total sampling. Results: The results showed that most respondents (55.4%) were not prepared for menarche. Bivariate analysis indicated a significant relationship between knowledge and readiness to face menarche (p-value = 0.000). However, a significant association was found between attitude and readiness to face menarche (p-value = 0.013). Conclusion: These findings are expected to serve as a reference for educational institutions to collaborate in providing education and preparation programs for students, enabling them to be better prepared for menarche and future reproductive health. Additionally, the results may serve as a basis for further research on adolescent girls’ readiness for menarche.
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