Content validity and reliability of a food frequency questionnaire to measure eicosapentaenoic acid and docosahexaenoic acid intakes in young adults: a pilot study

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dc.contributor.author Hanson, Jennifer Ann
dc.contributor.author Rosenkranz, Richard R.
dc.contributor.author Holcomb, Carol Ann
dc.contributor.author Haub, Mark D.
dc.date.accessioned 2013-01-16T14:49:52Z
dc.date.available 2013-01-16T14:49:52Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/2097/15210
dc.description.abstract Background: The food environment is rapidly changing with regard to omega-3 fatty acids. Research is hindered by the lack of a tool specifically designed to measure intakes of long-chain omega-3 fatty acids in US populations. The purpose of this pilot study was to assess the content validity and reliability of a novel 14-item food frequency questionnaire (FFQ) designed to measure contemporary sources of eicosapentaenoic aid (EPA) and docosahexaenoic acid (DHA). Methods: During May of 2009, college students (n = 165) completed the FFQ and provided feedback. Forty-five completed the questionnaire a second time allowing for the evaluation of test-retest reliability. Results: None of the students reported consuming a food naturally rich in EPA and DHA that was not included in the FFQ. Overall instrument reliability (n = 54) was strong (ρ = 0.86, p < 0.001) and the reliability for each of the non-functional food items ranged from moderate to strong (ρ = 0.48 to 0.86, p < 0.001). Correlation coefficients for each of the functional food items were low and/or non-significant. Uncertainty regarding omega-3 functional foods was listed as a reason by eight of the twelve who felt one or more of the questions were difficult to answer. Conclusions: Overall instrument reliability was strong and content validity was good. Nonetheless, participant feedback, and the decreased test-retest coefficients for the omega-3 functional foods, suggests unfamiliarity may be problematic when measuring intakes from these food sources. en_US
dc.language.iso en_US en_US
dc.relation.uri https://doi.org/10.31989/ffhd.v2i12.77 en_US
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject Functional foods en_US
dc.subject n-3 fatty acids en_US
dc.subject Dietary assessment en_US
dc.subject Seafood en_US
dc.subject Eicosapentaenoic acid en_US
dc.subject Docosahexaenoic acid en_US
dc.title Content validity and reliability of a food frequency questionnaire to measure eicosapentaenoic acid and docosahexaenoic acid intakes in young adults: a pilot study en_US
dc.type Text en_US
dc.date.published 2012 en_US
dc.citation.doi 10.31989/ffhd.v2i12.77
dc.citation.epage 507 en_US
dc.citation.issue 12 en_US
dc.citation.jtitle Functional Foods in Health and Disease en_US
dc.citation.spage 501 en_US
dc.citation.volume 2 en_US
dc.contributor.authoreid ricardo en_US
dc.contributor.authoreid carolann en_US
dc.contributor.authoreid haub en_US


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