Deanna M. Hoelscher, R. Sue Day, Jerri L. Ward, and Michael E. Scheurer are with the Human Nutrition Center, University of Texas School of Public Health, Houston, Tex. Eun Sul Lee and Ralph F. Frankowski are with the Division of Biometry, University of Texas School of Public Health, Houston. Steven H. Kelder is with the Center for Health Promotion and Prevention Research, University of Texas–Houston School of Public Health.