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  • Ophthalmology (Eye & Ear Hospital)
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    Reliability of a food frequency questionnaire to assess dietary antioxidant intake

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    Author
    McCarty, Catherine A.; De Paola, Caroline; Livingston, Patricia M.; Taylor, Hugh R.
    Date
    1997
    Source Title
    Ophthalmic Epidemiology
    Publisher
    Aeolus press
    University of Melbourne Author/s
    McCarty, Catherine; Taylor, Hugh
    Affiliation
    Medicine, Dentistry and Health Sciences: Centre for Eye Research Australia
    School of Medicine: Ophthalmology
    Metadata
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    Document Type
    Journal (Paginated)
    Citations
    McCarty, C. A. and De Paola, C. and Livingston, P. M. and Taylor, H. R. (1997). Reliability of a food frequency questionnaire to assess dietary antioxidant intake. Ophthalmic Epidemiology, 4(1), 33-39.
    Access Status
    This item is currently not available from this repository
    URI
    http://hdl.handle.net/11343/33483
    Description

    Publisher's version is restricted access in accordance with the Publisher Taylor & Francis policy.

    Abstract
    Objective: Epidemiologic evidence of a role for antioxidants in the prevention of chronic disease has been inconclusive, in part due to the difficulty of measuring past diets of free-living populations. The purpose of the current study was to examine the reliability of a 19-item, self-administered, semi-quantitative, food frequency questionnaire to assess intake of the major dietary antioxidants.Methods: Reliability was established by administering the food frequency questionnaire a second time by telephone. The subjects comprised 151 participants in the Melbourne Visual Impairment Project, a study of the distribution and determinants of eye disease in Melbourne residents aged 40 and over.Results: Spearman correlation coefficients ranged from 0.39 for spinach to 0.76 for yogurt, and all were highly significant (all p=0.001). The reliability of the instrument was not influenced by gender, English speaking ability, or the number of days between the first and second administration of the questionnaire.Conclusion: In conclusion, we have shown this 19-item food frequency questionnaire to be highly reliable. It should be useful for anyone involved in the study of the relationship of dietary antioxidant intake to health outcomes in large populations where limitations of time and money prohibit the collection of more detailed dietary intake information.
    Keywords
    CERA; ophthalmology; Centre for Eye Research Australia; eye research; vision; visual health; food frequency; dietary intake; antioxidants; reliability; questionnaire

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