A Content Analysis of Problematic Gambling Prevention Interventions in the United States.

Gambling revenue in the United States is at all-time highs while recent and forthcoming legislation relaxes constraints on casino gaming, sports betting, and fantasy sports betting. Increased gambling will result in increased problematic gambling, highlighting the need to study the impact of our problematic gambling prevention interventions. To address this, we conducted a content analysis of problematic gambling prevention messages in the U.