Development, validity and reproducibility of a whole grain food frequency questionnaire in Malaysian children.

Autor:	Koo, H. C., Lim, G. P., Kaur, Satvinder, Chan, K. Q., Florence Tan, Y. X., Pang, X. J., Tang, L. Y.
Předmět:	WHOLE grain foods CRONBACH'S alpha FOOD diaries BLAND-Altman plot RANK correlation (Statistics) RESEARCH RESEARCH evaluation RESEARCH methodology INGESTION DIET MEDICAL cooperation EVALUATION research SURVEYS COMPARATIVE studies QUESTIONNAIRES RESEARCH funding
Zdroj:	Nutrition Journal; 7/16/2020, Vol. 19 Issue 1, p1-9, 9p, 1 Diagram, 4 Charts, 1 Graph
Abstrakt:	Background: To date, there is no validated whole grain assessment tool for children in any Southeast Asian countries. Hence, there is a need for a valid tool to assess whole grain intake among Malaysian children. This study aimed to develop, validate and test the reproducibility of a food frequency questionnaire (FFQ) in estimating whole grain intake among Malaysian children.Methods: A total of 392 children participated in the FFQ development and 112 children aged 9-12 years participated in the validation phase; with a subsample of 50 children participating in the reproducibility phase. Three-day diet record (3DR) as the reference method in validation phase. Spearman correlations, mean difference, Bland-Altman plot and cross-classification analyses were used to assess validity. The reproducibility was tested through a repeat administration of the FFQ, with 1 month time interval. Reproducibility analyses involved intra-class correlation coefficient (ICC), Cronbach's alpha and cross-classification analyses.Results: The FFQ consisted of 156 whole grain food items from six food groups. Mean intake of whole grain in FFQ1 and 3DR were correlated well (r = 0.732), demonstrated good acceptance of the FFQ. Bland Altman plots showed relatively good agreement for both the dietary methods. Cross-classification of whole grain intake between the two methods showed that < 9.9% of children were grossly misclassified. Outcomes from ICC (0.989) and Cronbach's alpha (0.995) demonstrated excellent reliability. All the children were classified in the same or adjacent quartile of whole grain intake.Conclusions: Overall, the findings support the validity of the developed FFQ to appropriately estimate the whole grain intake in Malaysian children. This validated FFQ will be a valuable tool for future studies, to analyses the impact of whole grain consumption with disease relationship among Malaysian schoolchildren. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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