1 Melvin D. Livingston is with the Department of Biostatistics and Epidemiology, School of Public Health, University of North Texas Health Science Center, Fort Worth. Tracey E. Barnett is with the Department of Health Behavior and Health Systems, School of Public Health, University of North Texas Health Science Center. Chris Delcher is with the Department of Health Outcomes and Policy, College of Medicine, University of Florida, Gainesville. Alexander C. Wagenaar is with the Department of Behavioral Sciences and Health Education, Rollins School of Public Health, Emory University, Atlanta, GA.