Dietary assessment in Whitehall II: comparison of 7 d diet diary and food-frequency questionnaire and validity against biomarkers.

TitleDietary assessment in Whitehall II: comparison of 7 d diet diary and food-frequency questionnaire and validity against biomarkers.
Publication TypeJournal Article
Year of Publication2001
AuthorsBrunner, E, Stallone, D, Juneja, M, Bingham, S, Marmot, M
JournalBr J Nutr
Volume86
Issue3
Pagination405-14
Date Published2001 Sep
ISSN0007-1145
KeywordsAdult, Alcohol Drinking, Antioxidants, Biological Markers, Cross-Sectional Studies, Diet Records, Diet Surveys, Dietary Fats, Eating, Energy Intake, Female, Humans, London, Longitudinal Studies, Male, Middle Aged, Questionnaires, Regression Analysis, Reproducibility of Results, Trace Elements, Vitamins
Abstract

The aim of the present cross-sectional study was to examine the agreement and disagreement between a 7 d diet diary (7DD) and a self-administered machine-readable food-frequency questionnaire (FFQ) asking about diet in the previous year, and to validate both methods with biomarkers of nutrient intake. The subjects were an age- and employment-grade-stratified random subsample of London-based civil servants (457 men and 403 women), aged 39-61 years, who completed both a 7DD and a FFQ at phase 3 follow-up (1991-1993) of the Whitehall II study. Mean daily intakes of dietary energy, total fat, saturated, monounsaturated and polyunsaturated fatty acids, linoleic acid, total carbohydrate excluding fibre, sugars, starch, dietary fibre, protein, vitamin C, vitamin E (as alpha-tocopherol equivalents), folate, carotenes (as total beta-carotene activity), Fe, Ca, Mg, K and alcohol were measured. Serum cholesteryl ester fatty acids (CEFA), plasma alpha-tocopherol and beta-carotene were also measured as biomarkers. Estimates of mean energy intake from the two methods were similar in men, and some 10 % higher according to the FFQ in women. Compared with the 7DD, the FFQ tended to overestimate plant-derived micronutrient intakes (carotenes from FFQ v. 7DD men 2713 (SD 1455) v. 2180 (SD 1188) microg/d, women 3100 (SD 1656) v. 2221 (SD 1180) microg/d, both differences P

Alternate JournalBr. J. Nutr.
Citation Key1908
PubMed ID11570993
Grant ListAG13196 / AG / NIA NIH HHS / United States
HL36310 / HL / NHLBI NIH HHS / United States
HS06516 / HS / AHRQ HHS / United States