Comparison of <scp>Web‐Based</scp> Advertising and a Social Media Platform as Recruitment Tools for Underserved and <scp>Hard‐to‐Reach</scp> Populations in Rheumatology Clinical Research

Abstract

Facebook advertisements were superior to web advertisements for participant recruitment. Spanish Facebook advertisements had a greater click-through rate than English Facebook advertisements. Facebook was an effective recruitment method, particularly for Spanish speakers.