Claire Zizza, PhD,
Amy H. Herring, ScD,
June Stevens, PhD and
Barry M. Popkin, PhD
Claire Zizza is with the Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill. Amy H. Herring is with the Department of Biostatistics, School of Public Health, University of North Carolina at Chapel Hill. June Stevens is with the Department of Epidemiology and the Department of Nutrition, School of Public Health, University of North Carolina at Chapel Hill. Barry M. Popkin is with the Department of Nutrition and the Carolina Population Center, University of North Carolina at Chapel Hill.
FIGURE 1—Lengths of stay (per 1000 person-years) among individuals classified by body mass index category according to National Heart, Lung and Blood Institute criteria: 19711992.