| Summary: | PURPOSE: To develop Korean Menstrual Symptom Scale (KMSS) for university students and test its reliability and validity.
METHODS: The scale was developed by intensive literature review, development of preliminary items, verification of content validity, development of secondary items, verification of construct validity, and extraction of final items. Thirty-nine items were constructed. Data for validity and reliability testing were collected with a questionnaire survey from 391 university students. Data were analyzed with descriptive statistics, factor analysis, and reliability coefficients (Cronbach's α) with the SPSS program.
RESULTS: There were 37 final items which were sorted into six factors: ‘negative affection (8 items)’, ‘change of activity level (7 items)’, ‘physical symptom (9 items)’, ‘mood change (9 items)’, ‘change in concentration level (4 items)’, and ‘body water retention (5 items)’. The cumulative percent of variance was 63.3%. Regarding the reliability of the scale, its Cronbach's α was 0.96. Cronbach's α values for these factors ranged from 0.75 to 0.91.
CONCLUSION: The KMSS demonstrated acceptable validity and reliability. Repeated research is needed to measure menstrual symptom experienced by women of variable ages.
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