ABSTRACTPrimary dysmenorrhea was menstrual pain without any real abnormalities in genitals and could be a sign of reproductive system disorders. Prevalence of primary dysmenorrhea was quite high, but the lack of attention from the medical world, whereas primary dysmenorrhea can lead to decreased productivity and hinder daily activities. This study aimed to analyze the risk factors of primary dysmenorrhea in Ploso subdistrict of Tambaksari Surabaya. The study was an observational analytic cross

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... ectional design. Sampling was done by multistage cluster sampling. Respondents were 80 women of childbearing age 15-35 years old. Based on the results the prevalence of primary dysmenorrhea was at 71.3% . Most of the impact of primary dysmenorrhea that respondents perceived were declining productivity that is equal to 77.2%. Most of respondents not been examined primary dysmenorrhea to the doctor or midwife (84.2%) with the majority reason was respondents think that symptoms of primary dysmenorrhea perceived is reasonable (54.2%) . The highest proportion of respondents characteristics are aged 15-25 years (51.3%), had family history (52.5%), never given birth (60%), duration of menstruation 3-7 days (86%), age of menarche 12-13 years (53.8%), not did exercise (53.8%), had a normal nutritional status (38.8%), and severe stress (25%). The results of the bivariate analysis showed that there was a relationship between age and family history with primary dysmenorrhea, and there was no relationship between the experience of childbirth, length of menstruation, age of menarche, exercise habits, nutritional status, and state of stress with primary dysmenorrhea. The advice is to check primary dysmenorrhea to the doctor or midwife if find symptoms of primary dysmenorrhea to get treatment (psychotherapy or medication therapy), so that respondents could still work or do activities and productivity is not compromised. Keywords : primary dysmenorrhea , menstrual cramps, risk factors, women of childbearing age, reproduction