The accuracy of portion size reporting on self-administered online 24-hour dietary recalls among women with low incomes
Accurately estimating portion sizes remains a challenge in dietary assessment. The current study examined the accuracy of portion size estimation by women with low incomes who completed 24-hour dietary recalls using the online Automated Self-Administered 24-hour Dietary Assessment Tool (ASA24) in the Food and Eating Assessment STudy (FEAST) II. On average across foods and beverages, reported portion sizes were 7.4 grams and 6.4 grams higher than observed portion sizes in the independent and assisted conditions, respectively.
Full citation: Kirkpatrick, S.I., Guenther, P.M., Durward, C., Douglass, D., Zimmerman, T.P., Kahle, L.L., Atoloye, A.T., Marcinow, M.L., Savoie-Roskos, M.R., Herrick, K.A. and Dodd, K.W. (2022). The accuracy of portion size reporting on self-administered online 24-hour dietary recalls among women with low incomes. Journal of the Academy of Nutrition and Dietetics. https://doi.org/10.1016/j.jand.2022.03.018