Supplemental Information: Trends in Diversity of Participants in Dermatology Clinical Trials Over Time

The purpose of this study was to evaluate the diversity trends in dermatology randomized controlled trials over time. A systematic review was conducted to identify all prospective randomized controlled trials published from January 1, 2005 until August 26, 2020 that focused on psoriasis, lichen planus, alopecia areata, seborrheic dermatitis, vitiligo, acne/acneiform eruptions, eczema, and atopic dermatitis. Table S1 shows our search strategy. A total of 9518 articles were found, and 1504 manuscripts met inclusion criteria. Figure S1 demonstrates the flow diagram of how we narrowed down our included studies. We found the inclusion of diverse individuals in dermatology randomized controlled trials has improved over time but is still not reflective of the general population.