http://e-journal.unair.ac.id/PMNJ | 21 This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License Original Research Correlation Between Knowledge, Mother's Support, Peer Support with Anxiety to Confront Menarche among Adolescents at Elementary school: A Correlational Study Nurul Fauziyah, Rizki Fitryasari, Aria Aulia Nastiti Faculty of Nursing, Universitas Airlangga, Surabaya, Indonesia ARTICLE HISTORY Received: August 18, 2019 Accepted: May 13, 2020 Published: May 15, 2020 KEYWORDS knowledge; mother's support; peer support; adolescent's anxiety; menarche CORRESPONDING AUTHOR Nurul Fauziyah nurul.fauziyah- 2015@fkp.unair.ac.id Faculty of Nursing, Universitas Airlangga, Surabaya, Indonesia ABSTRACT Introduction: Menarche can affect the physical and psychological changes of a young woman; one of them is anxiety. The purpose of this research was to know the relationship between knowledge, mother's support, and peer support with adolescent's anxiety in confronting menarche. Methods: This study was an analytic correlational-cross sectional design. The population is a fourth-grade student of Elementary School Rungkut Menanggal 1, Rungkut Menanggal 2, and Rungkut Kidul 1 school year 2018/2019, which has not experienced menarche, totaling 148 students. The respondents were 108 students that had been recruited by the Random Sampling method with slovin formula. The Independent variables are knowledge, maternal support, and peer support. The dependent variable was adolescent's anxiety in confronting menarche. The data were collected using a questionnaire, analyzed using the spearmen rank correlation test. Results: The result of statistical test showed that knowledge (r = -0.626 p = 0.018), mother’s support (r = -0.725 p = 0.000) and peer support (r = - 0.581 p = 0.000) correlated with the anxiety of adolescent’s anxiety in confronting menarche. Conclusion: Knowledge, mother's support, and peer support can reduce adolescent's anxiety in confronting menarche because it can be used as a provision to prepare for menstruation. Cite this as: Fauziyah, N., Fitryasari, R., & Nastiti, A. N. (2020). Correlation Between Knowledge, Mother's Support, Peer Support with Anxiety to Confront Menarche among Adolescents at Elementary school: A Correlational Study. Pediomaternal Nurs. J., 6(1), 21-28. Doi: http://dx.doi.org/10.20473/pmnj.v6i1.14885 1. INTRODUCTION Adolescence is the stage of a person where adolescents are in the phase of children to adults characterized by physical, behavioral, cognitive, biological and emotional changes that have an age range between 10 to 19 years and are not married (Effendi and Makhfudli, 2011). As a biological development, young women will go through a phase where young women will reach the maturity stage of sexual organs that have the ability to reproduce called puberty. Puberty in adolescent girls can be characterized by hormonal changes that cause the arrival of menstruation for the first time or what is PEDIOMATERNAL NURSING JOURNAL Vol. 6, No. 1, March 2020 Journal Homepage: https://e-journal.unair.ac.id/PMNJ/ http://dx.doi.org/10.20473/pmnj.v6i1.14885