BMI, Body mass index.

Data from National Institutes of Health and National Heart, Lung, and Blood Institute: Evidence report of clinical guidelines on the identification, evaluation, and treatment of overweight and obesity in adults, Bethesda, MD, 1998, NIH/NHLBI. For a BMI of greater than 30, please go to http://www.nhlbi.nih.gov/guidelines/obesity/bmi_tbl.pdf.