[Relative validity of food frequency questionnaire for estimating dietary iron intake of students with anemia].

Abstract

OBJECTIVE:

To assess the relative validity of food frequency questionnaire (FFQ) for estimating dietary iron and its related nutrients and food intakes of students with anemia.

METHODS:

FFQ and weighed dietary records combining with 24h dietary recalls (adopted as reference method) were applied respectively to investigate the diet of 156 anemic students aged 10 - 12 years. The average dietary intakes of iron, haem iron, non-haem iron, vitamin C, meat/fish/poultry and eggs were estimated. Wilcoxon matched-pairs signed-rank test, Spearman's rank correlation, cross-classification and actual values for surrogate categories were performed to assess the relative validity of FFQ.

RESULTS:

Compared with the reference method, dietary iron and its related nutrients and food intakes were overestimated by FFQ, and bear poor correlation with reference method. The results of cross-classification and actual values for surrogate categories indicated that the low and high intakes of all dietary components could not be clearly differentiated by FFQ.

CONCLUSION:

FFQ presents unsatisfactory accuracy in assessing dietary intakes of iron and related nutrients of anemic students in less developed districts.

• Authors: Dan Yu, Junsheng Huo, Jing Sun, Wexian Li, Ling Lin, Anxu Wang, Gengjun Chen
• Journal: Wei sheng yan jiu = Journal of hygiene research (Wei Sheng Yan Jiu) Vol. 40 Issue 5 Pg. 596-600 (Sep 2011) ISSN: 1000-8020 [Print] China
• PMID: 22043710 (Publication Type: English Abstract, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Iron, Dietary

Topics

• Adolescent
• Anemia, Iron-Deficiency (etiology, prevention & control)
• Child
• China
• Diet
• Diet Records
• Diet Surveys
• Female
• Humans
• Iron, Dietary (administration & dosage)
• Male
• Reproducibility of Results
• Students
• Surveys and Questionnaires