Dataset Information

Reliability of Repeated Measures of Nutrient Intake by Diet Records in Residents in the Western Region of Japan.

ABSTRACT: We aimed to assess the day-to-day variation in twelve one-day diet records over one year from 131 residents of urban and rural areas in the western region of Japan. Between 2014 and 2015, the participants provided repeated one-day diet records once a month. We estimated the intraclass correlation coefficient (ICCs) for intakes for energy and 39 crude and energy-adjusted nutrients using linear mixed models. Among the unadjusted nutrients, ICCs ranged from 0.05 (95 percent confidence interval = 0.03-0.09) for vitamin A retinol equivalent (RE) to 0.55 (95% CI = 0.48-0.62) for potassium. After energy adjustment, the ICCs were 0.02 (95 percent confidence interval = 0.03-0.09) for vitamin A (RE) and 0.52 (95 percent confidence interval = 0.45-0.59) for potassium. Intakes of energy-adjusted macronutrients tended to have moderate degrees of day-to-day coefficients of variation (CVw, range = 0.13-0.23, mean = 0.18), while the coefficients of variation for intakes of micronutrients varied dramatically (CVw, range = 0.17-2.59, mean = 0.54). There were large day-to-day variations in nutrient intake assessed by diet records among urban and rural residents in the western region of Japan. This study provided information on the reproducibility of crude and energy-adjusted nutrients that may be useful for other dietary studies in Japanese populations.

SUBMITTER: Yoshizawa K

PROVIDER: S-EPMC6835429 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Reliability of Repeated Measures of Nutrient Intake by Diet Records in Residents in the Western Region of Japan.

Yoshizawa Kazuko K Willett Walter C WC Yuan Changzheng C

Nutrients 20191018 10

<h4>Objective</h4>We aimed to assess the day-to-day variation in twelve one-day diet records over one year from 131 residents of urban and rural areas in the western region of Japan.<h4>Methods</h4>Between 2014 and 2015, the participants provided repeated one-day diet records once a month. We estimated the intraclass correlation coefficient (ICCs) for intakes for energy and 39 crude and energy-adjusted nutrients using linear mixed models.<h4>Results</h4>Among the unadjusted nutrients, ICCs range ...[more]

PMID: 31635313

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Project description:BackgroundGestational nutrition can protect against adverse neurodevelopmental outcomes.ObjectivesWe developed a short tool for collecting maternal nutritional intake during pregnancy to facilitate research in this area and compared its retrospective use to prospectively-collected food frequency questionnaires (FFQ).MethodsMaternal nutritional intake was retrospectively assessed using three versions (full interview, full self-administered online, and shortened interview) of the Early Life Exposure Assessment Tool (ELEAT) among participants of the MARBLES pregnancy cohort study of younger siblings of autistic children. Retrospective responses were compared with responses to supplement questions and the validated 2005 Block FFQ prospectively collected in MARBLES during pregnancies 2-7 years prior. ELEAT nutrient values were calculated using reported food intake frequencies and nutrient values from the USDA nutrient database. Correlations between retrospectively- and prospectively-reported intake were evaluated using Kappa coefficients, Youden's J, and Spearman Rank Correlation Coefficients (rs).ResultsMARBLES FFQ dietary intakes were compared among 54 women who completed the ELEAT full form including 12 online, and among 23 who completed the ELEAT short form. Correlations across most foods were fair to moderate. Most ELEAT quantified nutrient values were moderately correlated (rs = 0.3-0.6) with those on the Block FFQ. Supplement questions in both MARBLES and the ELEAT were completed by 114 women. Kappas were moderate for whether or not supplements were taken, but modest for timing. Correlations varied by version and child diagnosis or concerns, and were higher when mothers completed the ELEAT when their child was 4 years old or younger.ConclusionsWith recall up to several years, ELEAT dietary and supplement module responses were modestly to moderately reliable and produced nutrient values moderately correlated with prospectively-collected measures. The ELEAT dietary and vitamin supplements modules can be used to rank participants in terms of intake of several nutrients relevant for neurodevelopment.

Dataset Information

Reliability of Repeated Measures of Nutrient Intake by Diet Records in Residents in the Western Region of Japan.

Publications

Reliability of Repeated Measures of Nutrient Intake by Diet Records in Residents in the Western Region of Japan.

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