In this article, the Midlife Women's Symptom Index (MSI), a recently developed measurement scale for symptoms experienced during the menopausal transition, is presented with its psychometric properties. This was a cross-sectional study including (a) an expert review among 20 women's health experts and (b) a psychometric test among 77 middle-aged women. The instruments for the psychometric test were 19 questions on sociodemographic characteristics, the MSI, and the Menopausal Symptom Checklist (MSC). Data were analyzed using descriptive statistics, K-R 20, and item analysis. The reliability and validity of the MSI were supported among middle-aged women.
This study was funded by the Expedited Proposal-Enhancement Grant (EP-EG) program, the Center for Health Promotion Research: A NIH-funded Research Center, NINR (P30 NR05051). The author acknowledges the expertise of Drs. Alexa Stuifbergen, Sharon Dormire, Heather Becker, Michael Erard, and Wonshik Chee in the development process of the MSI and the preparation of this article.