Repeatability of a Short Food Frequency Questionnaire to Assess Calcium Intake in Older Australians
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Objective. To assess the repeatability of the validated Flinders Calcium Food Frequency Questionnaire for estimating dietary calcium intake in a sample of community dwelling older Australians. Methods. A test-retest repeatability study involving 100 subjects (65 years) living independently in metropolitan Adelaide, Australia. Estimates of daily calcium intake from the first and repeated administration were calculated from two versions (35-item and 15-item) of the . The intraclass correlation coefficient (ICC) was used to assess the repeatability. Results. Moderate and comparable ICC values (, ) were found across the two versions of the . Conclusion. Both versions demonstrated moderate repeatability, supporting the results of previous studies.
Copyright © 2010 Michelle Miller et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.