Mobile Phone Ownership Is Not a Serious Barrier to Participation in Studies: Descriptive Study

Emily J Harvey   ¹ , MA ;   Leslie F Rubin   ^{1, 2} , MS ;   Sabrina L Smiley   ¹ , MCHES, MPH, PhD ;   Yitong Zhou   ¹ , MS ;   Hoda Elmasry   ¹ , MPH ;   Jennifer L Pearson   ^{1, 3} , MPH, PhD

¹ Truth Initiative, Schroeder Institute for Tobacco Research and Policy Studies, Washington, DC, United States

² Department of Psychology, American University, Washington, DC, United States

³ Department of Health, Behavior, and Society, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States