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Scaling a Brief Digital Well-Being Intervention (the Big Joy Project) and Sociodemographic Moderators: Single-Group Pre-Post Study

Scaling a Brief Digital Well-Being Intervention (the Big Joy Project) and Sociodemographic Moderators: Single-Group Pre-Post Study

For categorical moderators, we used and reported an F test for significant interactions and used the Wilcoxon rank sum test (W) to compare the difference scores with a reference group due to non-normal distributions and unequal group sizes. For sex, the reference group was female; for race and ethnicity, the reference group was White; for educational level, the reference group was high school or less. We applied the Benjamini-Hochberg procedure for all post hoc analyses to account for multiple comparisons.

Darwin A Guevarra, Yoobin Park, Xuhai Xu, Jin Liou, Jolene Smith, Peggy Callahan, Emiliana Simon-Thomas, Elissa S Epel

J Med Internet Res 2025;27:e72053