A study of the use of a photographic food atlas to estimate served and self-served portion sizes
Article first published online: 31 OCT 2003
1997 Blackwell Science Ltd.
Journal of Human Nutrition and Dietetics
Volume 10, Issue 2, pages 117–124, 1997-04
How to Cite
Robinson, F., Morritz, W., McGuiness, P. and Hackett, A. F. (1997), A study of the use of a photographic food atlas to estimate served and self-served portion sizes. Journal of Human Nutrition and Dietetics, 10: 117–124. doi: 10.1046/j.1365-277X.1997.00043.x
- Issue published online: 31 OCT 2003
- Article first published online: 31 OCT 2003
- Cited By
- dietary surveys;
- food photographs;
- food portion size
Background: Although it is generally accepted that a weighed intake is the most valid way of assessing nutrient intake, this is not always the most appropriate method. Photographs have been suggested as a useful aid in assessing portion size when other methods of recording dietary intake are used.Method: Male and female subjects (n=100) were recruited to assess portion sizes of served amounts of mashed potato or cornflakes using food photographs. A second group of subjects (n=40) were recruited to assess portion sizes of self-served mashed potato or cornflakes using the same photographs.Results: Estimates varied from −70.6% underestimation to +198.7% overestimation for mashed potato, with less variation for the cornflakes where portions were served.??? Where the food was self-served, results ranged from −38% and −64% underestimation to +61% and +88% overestimation for cornflakes and mashed potato, respectively.Correlation coefficients between estimated and actual weights of food showed them to be of statistical significance (P<0.05).Conclusion: Food photographs are a useful and convenient aid in the estimation of food portion sizes.