Development of the premenstrual symptoms diagnostic scale and premenstrual symptoms diary

We developed and psychometrically evaluated the Premenstrual Symptoms Diary (PMSD) and Premenstrual Symptoms Diagnostic Scale (PMSDS) based on DSM-5 criteria. The PMSD was used for prospective daily symptom monitoring across two menstrual cycles, and the PMSDS was designed for screening-level assessment of PMS and PMDD. PMSD analyses included 164 diary completers. PMSDS analyses included exploratory factor analysis with 643 participants, confirmatory factor analysis with 428 participants, and test-retest analysis with 61 participants. The final PMSDS included 30 items and five dimensions. We obtained fit indices consistent with first- and second-order structures through confirmatory factor analysis. Cronbach's alpha was 0.96, and test-retest reliability was .85. Using ROC analyses, we identified cutoffs of 42 for PMS and 81 for PMDD. The PMSD and PMSDS may have potential utility for structured symptom monitoring and screening-level assessment, but further external validation and evaluation of clinical utility are needed.