Abstract
This research is a quantitative research with a cross sectional design. Data collection was carried out in March-April 2021. The research population was... Young Women with a research sample of 198 young women. Sampling was done by using proportional random sampling technique. This study consisted of the independent variable "age of menarche, duration of menstruation and exercise habits" and the dependent variable "primary dysmenorrhea". Data analysis using Chi-Square test.
The incidence of primary dysmenorrhea in adolescent girls is 74.2%. Factors related to the incidence of primary dysmenorrhea in adolescent girls were age at menarche (P=0.000; 1.870; 95% CI 1.371-2.552) and length of menstruation (P=0.001; 0.720; 95% CI 0.635-0.817). And there is no relationship between exercise habits (P=0.720; 1.184 95% CI 1.012-1.835).
There is a relationship between the age of menarche with the incidence of primary dysmenorrhea and the length of menstruation in adolescent girls in the District of Sitinjau Laut.