Submitted to: University of Southern Mississippi Thesis
Publication Type: Other
Publication Acceptance Date: 5/1/2001
Publication Date: 5/1/2001
Citation: KURTZ, A.H. REPORTED ENERGY INTAKE OF PERSONS RESIDING IN THREE COUNTIES OF THE LOWER MISSISSIPPI DELTA AREA: EVALUATION OF PREDICTED ENERGY EXPENDITURE VERSUS REPORTED ENERGY INTAKE FROM THE FOODS VALIDATION STUDY. University of Southern Mississippi Masters Thesis. 2001. 102 p. Interpretive Summary: This study compared the energy intake reported by individuals with calculated energy output to determine if people were underreporting when asked to recall dietary intake for the past 24-hours in the Delta Nutrition Intervention Research Initiative FOODS Validation Study. The recalls were obtained by telephone or by the in-person interviews by trained interviewers using a multiple-pass method. The interviewer asks questions, reviews answers, and rechecks answers. Energy output was calculated by a commonly used formula adjusted for an inactive lifestyle and stable weight pattern. Individuals underreported energy intake by about 16%. While both men and women underreported intake, women underreported to a greater degree. Caucasians underreported energy intake more than African Americans. Individuals classified as overweight or obese underreported intakes while those classified as normal or underweight did not differ. Underreporting was common in this rural, largely African American population and needs to be considered when evaluating dietery intake.
Technical Abstract: The primary goal of this study was to compare self-reported energy intake with calculated energy expenditure to determine whether underreporting occurred using self-reported 24-hour dietary recalls collected for the Delta Nutrition Intervention Research Initiative FOODS Validation Study. The recalls were collected by telephone or in-person using the multiple-pass method by trained interviewers. Predicted energy expenditure was calculated using the Harris-Benedict and WHO formulas and was multiplied by 1.43 to determine the calories needed in a day for a sedentary lifestyle and to maintain weight. Participants included 147 men and women aged 19 to 96 years who were residents of three lower Mississippi Delta counties living in both telephone and non-telephone households. Only adult non-dieters who reported usual intake were included in the analysis. Mean differences in reported energy intake and predicted energy expenditure were determined for males (n=67) and females (n=80), African Americans (n=108) and Caucasians (n=37), and individuals whose BMI was <25 (n=54) and 25 or greater (n=93) using analysis of variance. Individuals underreported energy intake by approximately 16%. Males and females both underreported intake but females underreported a greater degree than males. Caucasians underreported energy intake more than African Americans. Individuals with a BMI 25 or greater underreported energy intake by 22% and 23% for the Harris-Benedict and WHO equations, respectively, while reported energy intake did not differ from predicted energy expenditure in individuals with a BMI <25. Underreporting was common in this rural, largely African American population and should be considered when evaluating dietary intake.