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Background: Menarche is the fi rst period of menstruation in a person occuring around the age of 11-13 years.The average age of menarche is now decreasing approaching normal age. This is due to several factors such as, maternal menarche, sports activity, adult mass media exposure, nutritional status, and parent income. This will have an impact on the next life. Aim:To determine the dominant factors associated with the age of menarche in female teenager in SMPN 01 JumapoloKaranganyarRegency in 2016. Methods: The type of research used was quantitative study method with cross sectional approach, with 97 female teenagers as samples using total sampling technique.Data were collected using questionnaire and analyzed using Spearman rank correlation test and linear regression test. Results:This research showed that there is a relationship between age of menarche of female teenagers and nutritional status (BMI) (p-value 0.032) and age of menarche of female teenagers and with parent income (p-value 0,018).The age of maternal menarche, exercise habits and frequency of favourite programme watching has no relationship with the age of menarche of female teenagers. Multivariate analysis showed that nutritional status factor (BMI) was the most dominant factor related to strength of relationship (B) -0.94. Conclusion: Nutrition status is the most dominant factor associated with age of menarche, therefore, it is expected to provide health education for female teenagers on to improve nutrition in the 9-13 year of age range.

Nutrition status as dominant factors related to the age of menarche in teenagers