Sources of variance in 24-hour dietary recall data: implications for nutrition study design and interpretation

Beaton, George H.; Milner, Joseph; Corey, Paul; McGuire, Valerie; Cousins, Mary; Stewart, Erin; Ramos, Miguel; Hewitt, David; Grambsch, P V; Kassim, N.R.W.; Little, J. A.

doi:10.1093/ajcn/32.12.2546

Cited by 873 publications

(505 citation statements)

References 20 publications

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“…In many of the studies reviewed methods were inadequate to classify individuals with any precision within the population distribution of true (habitual) intake, due to the large day-to-day variation within person in dietary consumption including magnesium. [15][16][17][18][19] High intra-individual variation can attenuate the absolute values of regression and correlation coefficients. 20 Thus, any potential association between magnesium intake and BP would tend to be underestimated with bias in the estimates of the regression of correlation coefficient toward a zero value (regression dilution).…”

Section: Discussionmentioning

confidence: 99%

Dietary magnesium intake and blood pressure: a qualitative overview of the observational studies

Mizushima

Cappuccio

Nichols³

et al. 1998

J Hum Hypertens

120

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Published reports of 30 separate sets of analyses from 29 observational studies relating dietary intake of magnesium to blood pressure (BP) were identified through a comprehensive search using MEDLINE and BIDS-EMBASE. Three studies were prospective, 24 crosssectional (25 reports), of which four also contained a longitudinal component, and two were obtained from baseline data in a trial. Various dietary methodologies were used: 24-h dietary recall (n = 12), food-frequency questionnaire (8), food record (7), and duplicate diet (2). Twelve reports compared magnesium intake or BP level between subgroups. Seven showed a negative association between magnesium intake and BP level, and five reported no association. From 18 of the 30 sets of analyses either a regression estimate or a Pearson correlation coefficient was reported. Many reports also allowed identification of subgroups by sex, age and race. Ninety population samples and subgroups could

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Section: Discussionmentioning

confidence: 99%

Dietary magnesium intake and blood pressure: a qualitative overview of the observational studies

Mizushima

Cappuccio

Nichols³

et al. 1998

J Hum Hypertens

120

View full text Add to dashboard Cite

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“…The use of two 24HR allowed estimation of usual food intake but the period between assessment surveys (2003)(2004)(2005)(2006)(2007) can be considered large, so one could argue that changes over time could lead to differential changes in eating patterns, as well as in within-and between-person variation. However, it is known that any adjustment gives less biased results than not adjusting distributions (4,34,35) .…”

Section: Limitationsmentioning

confidence: 99%

Excessive meat consumption in Brazil: diet quality and environmental impacts

Carvalho

César

Fisberg

et al. 2012

Public Health Nutr.

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Objective: To evaluate red and processed meat intake, and the impact meat consumption has on diet quality and the environment. Design: A large cross-sectional health survey performed in São Paulo, Brazil. Setting: Diet was assessed by two 24 h dietary recalls. Usual intakes were calculated using the Multiple Source Method. The World Cancer Research Fund recommendation of an average of 71?4 g/d was used as the cut-off point to estimate excessive red and processed meat consumption. To investigate the relationship between meat consumption and diet quality we used the Brazilian Healthy Eating Index Revised. The environmental impact was analysed according to estimates of CO 2 equivalent emissions from meat consumption. Subjects: Brazilians (n 1677) aged 19 years and older were studied. Results: The mean red and processed meat intake was 138 g/d for men and 81 g/d for women. About 81 % of men and 58 % of women consumed more meat than recommended. Diet quality was inversely associated with excessive meat intake in men. In Brazil alone, greenhouse gas emissions from meat consumption, in 2003, were estimated at approximately 18 071 988 tonnes of CO 2 equivalents, representing about 4 % of the total CO 2 emitted by agriculture. Conclusions: The excessive meat intake, associated with poorer diet quality observed, support initiatives and policies advising to reduce red and processed meat intake to within the recommended amounts, as part of a healthy and environmentally sustainable diet.

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“…A number of studies have examined the relative contributions of several sources of variation in dietary data (Liu et al, 1978;Beaton et al, 1979;Rush & Kristal, 1982;McGee et al, 1982;Todd et al, 1983;Beaton et al, 1983;Hunt et al, 1983;Sempos et al, 1985;Tangney et al, 1987;McAvay & Rodin, 1988;Nelson et al, 1989;Hartman et al, 1990;Neuhaus et al, 1991;Wassertheil-Smoller et al, 1993). These investigations have generally compared the intra-and interindividual variations within a population, but no studies have reported the relative contribution of within-population and between-population variance to total variability between populations.…”

Section: Introductionmentioning

confidence: 99%

Interpopulation and intrapopulation variability of nutrient intake in five regions of Japan

et al. 1998

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Objectives: To determine the extent to which interpopulation (between-population) variance, relative to intrapopulation (within-population) variance, contribute to the total variability in nutrient intakes. Design: Cross-sectional study. Setting: Five Public Health Center districts in Japan. Subjects: Two hundred and seven men and 183 spouses. Interventions: A three-day weighed food record. Main outcome measures: The total variance in the consumption of 17 nutrient variables was partitioned by analysis of variance into its inter-and intrapopulation components separately for men and women. Results: The percentage contribution of the interpopulation to total variance differed according to the nutrient; it was notable (8±17%) for total energy, carbohydrates, phosphorus, and sodium in both men and women, but was negligible (less than 4%) for micronutrients such as retinol, carotene, thiamin, ribo¯avin, niacin and ascorbic acid. The ratio of intra-to interpopulation variance was estimated for 31 nutrients (17 in men and 14 in women). The point estimates of the ratio were larger than unity in all nutrients, and the lower limit of the 95% con®dence intervals exceeded unity for all but 5 nutrients. Of the two sources of intrapopulation variation, intraindividual variance was larger than interindividual variance in most of the nutrient. Conclusions: The relative magnitude of interpopulation variation in dietary data can be used to quantify the range of exposure in ecological studies and to examine the heterogeneity of populations pooled for individualbased analysis.

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Sources of variance in 24-hour dietary recall data: implications for nutrition study design and interpretation

Cited by 873 publications

References 20 publications

Dietary magnesium intake and blood pressure: a qualitative overview of the observational studies

Dietary magnesium intake and blood pressure: a qualitative overview of the observational studies

Excessive meat consumption in Brazil: diet quality and environmental impacts

Interpopulation and intrapopulation variability of nutrient intake in five regions of Japan

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