Real-World Effectiveness of Ritlecitinib in Alopecia Areata Patients in the US: A Retrospective Analysis Using EHR and Claims Data

This study will use US electronic health records (EHR) linked to US healthcare claims data to describe the baseline demographic and clinical characteristics of AA patients prescribed ritlecitinib; assess its real-world effectiveness based on dermatologist-recorded outcomes; and evaluate ritlecitinib treatment patterns and concomitant use of SOC (Standard of care) medications among patients aged 12 years and older. Data Management All study data exist as structured data by the time of study. ModMed structured EHR data will be delivered to HealthVerity. HealthVerity will then normalize the data to comply with HealthVerity\'s HIPAA Certification and Expert Determination. HealthVerity will then deliver the transformed ModMed data to the sponsor\'s de-identified environment. HealthVerity also will deliver structured claims data to the sponsor\'s de-identified environment. The sponsor will then link the claims data with the transformed ModMed data. The sponsor will conduct data analyses using SAS (SAS Institute, Cary, NC, US) or R (The R Foundation for Statistical Computing, Vienna, Austria). Versions of packages will be documented to assure reproducibility. Analyses will extract data according to all details in the study design, e.g., inclusion and exclusion criteria.