Premium
Two web based 24 hour recalls provide valid protein intake reports for African Americans and Caucasians in the Energetics Study
Author(s) -
Arab Lenore,
Jardack Patricia,
WesselingPerry Katherine,
Ang Alfonso
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.25.1_supplement.31.6
Subject(s) - energetics , medicine , biology , ecology
Web based recalls offer an inexpensive and widely accessible dietary assessment alternative. Their validity for protein intake assessment was tested among African Americans (AA) and Caucasians (C) in the Energetics study. On two independent days, subsequent to 24 hour urine collections, a multipass, food image‐based, computerized tool (DietDay) was conducted among 233 Caucasians and African Americans. Despite considerably greater within person variance in protein intake among AA as compared with C (3220 versus 1780) the validity of the 24 hour protein reports in AA reports exceeded that of the C. The log‐transformed Pearson's correlation adjusted for age and gender between doubly labeled water (DLW) and the mean of 6 DietDays was 0.43 among AA and 0.36 among CC. Validity of a food frequency questionnaire (FFQ) for protein intake in the same group was substantially lower with log transformed Pearson's partial correlations of 0.04 for AA and 0.26 for C. Thus, protein reports among AA and C using a web based dietary assessment tool are valid and surpass the correlations of FFQs using DLW. Supported by NIH R01CA105048.