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Antioxidant Food Frequency Questionnaire in Healthy Young Adults: Validity and Reproducibility
Author(s) -
Yang Meng,
Wang Ying,
Davis Catherine G.,
Lee SangGil,
Song Won O.,
Chun Ock K.
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.600.2
Subject(s) - food frequency questionnaire , antioxidant , medicine , reproducibility , antioxidant capacity , food science , chemistry , environmental health , biochemistry , chromatography
Antioxidant rich diet has been implicated to play the pivotal role in preventing chronic diseases; yet no existing food frequency questionnaires (FFQ) are equipped to assess usual antioxidant intake and status. With the aim to develop a valid and reliable antioxidant FFQ (AOX‐FFQ), we developed a 70‐item AOX‐FFQ based on the top 100 major antioxidant‐rich food sources in American diets. For the validation, 60 healthy young adults completed 30‐d diet records (DR‐30d) and two AOX‐FFQs one month apart. The dietary total antioxidant capacity assessed by DR‐30d and two FFQs were highly correlated (r = 0.63–0.82, P < 0.001). Compared with antioxidant intakes from average of DR‐30d, AOX‐FFQ accounted for 34% to 127% of antioxidant intakes with Pearson correlation coefficients ranging from 0.27 to 0.69 (P < 0.05), except for proanthocyanidins. The new AOX‐FFQ reproducibility was high (r = 0.47–0.77, P < 0.001) for various antioxidants. This valid and reliable AOX‐FFQ in estimating antioxidant intakes in healthy young adults may be useful in other target groups after similar validation studies. Grant Funding Source : USDA Hatch Grant