HSCI 130 Lecture 19: Eating Disorders and Obesity
Document Summary
Self reports of height and weight yield lower measures of obesity. Underreporting of weight increase with increasing bmi (men say height is higher, women say weight is under) Self-reported data collected face to face v. s telephone interviews yield higher prevalence of overweight/obesity methods of collections have changed across the years. Waist circumference: 94cm men and 80cm women. Bmi calculations (imperial) = weight (pounds)/height (inches)^2 x 703. Raters are slightly lower for women than men at all ages except for those aged 72 years or older. While higher-income women have lower obesity rates than lower-income women, this association is not seen among men (figure 4) in the latest canadian data. Energy-density: available dietary energy per unit weight (kilocalorie per gram or megajoule per kilogram) Energy cost: monetary cost of a unit of energy (dollars per kilocalorie or dollars per megajoule) Dietary energy density and energy costs are inversely related, so that more energy dense diets cost less.