Virginia Quick1, Carol Byrd-Bredbenner2, Suzanne Shoff3, Adrienne A White4, Barbara Lohse5, Tanya Horacek6, Kendra Kattelmann7, Beatrice Phillips8, Sharon L Hoerr9, Geoffrey Greene10. 1. Department of Health Sciences, James Madison University, Harrisonburg, VA. Electronic address: gingermquick@gmail.com. 2. Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ. 3. Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, WI. 4. School of Food and Agriculture, University of Maine, Orono, ME. 5. Department of Nutritional Sciences, Pennsylvania State University, University Park, PA. 6. Department of Public Health, Food Studies and Nutrition, Syracuse University, Syracuse, NY. 7. Department of Health and Nutritional Sciences, South Dakota State University, Brookings, SD. 8. Department of Food and Nutritional Sciences, Tuskegee University, Tuskegee, AL. 9. Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI. 10. Department of Nutrition and Food Sciences, University of Rhode Island, Kingston, RI.
Abstract
OBJECTIVE: This study examined associations between college students' self-report and measured height and weight. METHODS: Participants (N = 1,686) were 77% white, 62% female, aged 18-24 years (mean ± SD, 19.1 ± 1.1 years), and enrolled at 8 US universities. Body mass index (BMI) was calculated for self-report (via online survey); trained researchers measured height and weight and categorized them as normal (18.5 to < 25), overweight (25 to < 30), obese (30 to < 35), and morbidly obese (≥ 35). RESULTS: Concordance of self-report vs objectively measured BMI groups using chi-square revealed that 93% were accurate, 4% were underestimated, and 2.7% were overestimated. Pearson correlations and adjusted linear regression revealed significant associations between self-report and measured BMI (r = .97; P < .001) and BMI adjusted for age, gender, and race/ethnicity (R² = .94). Concordance was also high between BMI categories (kappa = 0.77; P < .001). CONCLUSIONS AND IMPLICATIONS: Findings provide support for the utility of self-report height and weight for survey research in college students.
OBJECTIVE: This study examined associations between college students' self-report and measured height and weight. METHODS:Participants (N = 1,686) were 77% white, 62% female, aged 18-24 years (mean ± SD, 19.1 ± 1.1 years), and enrolled at 8 US universities. Body mass index (BMI) was calculated for self-report (via online survey); trained researchers measured height and weight and categorized them as normal (18.5 to < 25), overweight (25 to < 30), obese (30 to < 35), and morbidly obese (≥ 35). RESULTS: Concordance of self-report vs objectively measured BMI groups using chi-square revealed that 93% were accurate, 4% were underestimated, and 2.7% were overestimated. Pearson correlations and adjusted linear regression revealed significant associations between self-report and measured BMI (r = .97; P < .001) and BMI adjusted for age, gender, and race/ethnicity (R² = .94). Concordance was also high between BMI categories (kappa = 0.77; P < .001). CONCLUSIONS AND IMPLICATIONS: Findings provide support for the utility of self-report height and weight for survey research in college students.
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