Dysmenorrhea-Related Impact on Functioning Scale: Development and Measurement Properties for Cisgender Women and Transgender Men.

Objectives: To develop the Dysmenorrhea-related Impact on Functioning Scale (DIFS) to assess the impact of dysmenorrhea on functioning in cisgender women and transgender men and to evaluate its measurement properties.

Methods: Mixed and online design study conducted with adolescents and adult cisgender women and transgender men with dysmenorrhea. We developed the DIFS based on the International Classification of Functioning, Disability, and Health.