Social desirability trait influences on self-reported dietary measures among diverse participants in a multicenter multiple risk factor trial

James R. Hebert, Thomas G. Hurley, Karen E. Peterson, Ken Resnicow, Frances E. Thompson, Amy L. Yaroch, Margaret Ehlers, Doug Midthune, Geoffrey C. Williams, Geoffrey W. Greene, Linda Nebeling

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113 Scopus citations

Abstract

Data collected at 4 Behavioral Change Consortium sites were used to assess social desirability bias in self-reports derived from a dietary fat screener (PFat), a dietary fruit and vegetable screener (FVS), and a 1-item question on fruit and vegetable intake. Comparisons were made with mean intakes derived from up to 3 24-h recall interviews at baseline and follow-up (at 12 mo in 3 sites, 6 mo in the fourth). A social-desirability-related underestimate in fat intake on the PFat relative to the 24HR (percentage energy as fat) was evident in women [baseline b = -0.56 (P = 0.005); follow-up b = -0.62 (P < 0.001)]. There was an overestimate in FVS-derived fruit and vegetable consumption (servings/week) in men enrolled in any intervention at follow-up (b = 0.39, P = 0.05) vs. baseline (b = 0.04, P = 0.75). The 1-item fruit and vegetable question was associated with an overestimate at baseline in men according to SD score (b = 0.14, P = 0.02), especially men with less than college education (b = 0.23, P = 0.01). Women with less than college education expressed a similar bias at follow-up (b = 0.13, P = 0.02). Differences in the magnitude of bias according to gender, type of instrument used, and randomization condition are comparable to what has been seen for other instruments and have important implications for both measuring change in studies of diet and health outcomes and for developing methods to control for such biases.

Original languageEnglish (US)
Pages (from-to)226S-234S
JournalJournal of Nutrition
Volume138
Issue number1
DOIs
StatePublished - Jan 2008

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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    Hebert, J. R., Hurley, T. G., Peterson, K. E., Resnicow, K., Thompson, F. E., Yaroch, A. L., Ehlers, M., Midthune, D., Williams, G. C., Greene, G. W., & Nebeling, L. (2008). Social desirability trait influences on self-reported dietary measures among diverse participants in a multicenter multiple risk factor trial. Journal of Nutrition, 138(1), 226S-234S. https://doi.org/10.1093/jn/138.1.226s