Application and interpretation of multiple statistical tests to evaluate validity of dietary intake assessment methods

Lombard, Martani J; Steyn, Nelia P.; Charlton, Karen E; Senekal, Marjanne

doi:10.1186/s12937-015-0027-y

Cited by 172 publications

(332 citation statements)

References 74 publications

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“…It is important to be mindful of the type of statistical analysis used to investigate validity. Lombard et al (36) noted that in some cases more than three statistical measures are required to truly assess the validity of dietary assessment measures. Lastly, this review demonstrates that although a standardised dietary assessment methodology is preferential for nutrition surveillance across countries, valuable technology-based 24HDR tools exist and could be used to collect intermittent data for continual health and nutrition research purposes.…”

Section: Resultsmentioning

confidence: 99%

“…Foster (5) assessed the precision of INTAKE24 compared with other web-and computer-based methods of dietary assessment, which had included these findings in their analysis, by calculating the width of the limits of agreement. The lack of this statistical interpretation in dietary assessment validation studies was also noted by Lombard et al (36) .…”

Section: Accuracy/precisionmentioning

confidence: 95%

“…It is known that one statistical measure in isolation cannot determine the validity of any method of dietary assessment (36) . However, due to the variation and combination of statistical measures used across studies, for the purposes of this review statistical measures are compared in isolation across studies.…”

Section: Accuracy/precisionmentioning

confidence: 99%

“…A validation study investigates the accuracy of a test measure compared with an objective measure of intake, such as biological markers or direct observation of intake. Assessing the validity of dietary assessment tools is difficult due to the risk of correlated error between the test method and a reference method (36) . The cost and practicality associated with the direct observation of intake or the collection of biological samples for the analysis of biomarkers of intake can also be limiting factors.…”

Section: Introductionmentioning

confidence: 99%

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A review of the design and validation of web- and computer-based 24-h dietary recall tools

et al. 2016

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Access to the full text of the published version may require a subscription. Rights © The Authors 2016. Published by Cambridge University Press(CUP) on behalf of The Nutrition Society.Embargo information Access to this item is restricted until 12 months after publication by the request of the publisher. (24HDR) method is currently the most utilised method for the collection of dietary intake data at a national level. Recently there have been many developments using web-based platforms to collect food intake data using the principles of the 24HDR method. This review identifies web-and computer-based 24HDR tools that have been developed for both children and adult population groups, and examines common design features and the methods used to investigate the performance and validity of these tools. Overall, there is generally good to strong agreement between web-based 24HDR and respective reference measures for intakes of macro-and micronutrients. Embargo lift date

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Section: Resultsmentioning

confidence: 99%

Section: Accuracy/precisionmentioning

confidence: 95%

Section: Accuracy/precisionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A review of the design and validation of web- and computer-based 24-h dietary recall tools

et al. 2016

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“…There are other methods for judging the usefulness of new dietary assessment tools, such as the method of triads, which we have used previously (8) , or missclassification, but they are not discussed here. Lombard et al (38) provided a recent review and recommendations on the use of other methods, specifically applicable to nutrient assessment. The comparison of 3 ×24HR with a FFQ outlined here is an example of an approach that can be applied not only to dietary methodology but also to other methods used in nutrition practice and research, which are commonly assessed for agreement using BA methodology.…”

Section: Discussionmentioning

confidence: 99%

Improved interpretation of studies comparing methods of dietary assessment: combining equivalence testing with the limits of agreement

et al. 2016

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The aim of this study was to demonstrate the use of testing for equivalence in combination with the Bland and Altman method when assessing agreement between two dietary methods. A sample data set, with eighty subjects simulated from previously published studies, was used to compare a FFQ with three 24 h recalls (24HR) for assessing dietary I intake. The mean I intake using the FFQ was 126·51 (SD 54·06) µg and using the three 24HR was 124·23 (SD 48·62) µg. The bias was −2·28 (SD 43·93) µg with a 90 % CI 10·46, 5·89 µg. The limits of agreement (LOA) were −88·38, 83·82 µg. Four equivalence regions were compared. Using the conventional 10 % equivalence range, the methods are shown to be equivalent both by using the CI (−12·4, 12·4 µg) and the two one-sided tests approach (lower t = −2·99 (79 df), P = 0·002; upper t = 2·06 (79 df), P = 0·021). However, we make a case that clinical decision making should be used to set the equivalence limits, and for nutrients where there are potential issues with deficiency or toxicity stricter criteria may be needed. If the equivalence region is lowered to ±5 µg, or ±10 µg, these methods are no longer equivalent, and if a wider limit of ±15 µg is accepted they are again equivalent. Using equivalence testing, acceptable agreement must be assessed a priori and justified; this makes the process of defining agreement more transparent and results easier to interpret than relying on the LOA alone.

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Measuring Dietary Intake

MacIntyre,

Wenhold

2019

Introduction to Human Nutrition, Third Edition

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Application and interpretation of multiple statistical tests to evaluate validity of dietary intake assessment methods

Cited by 172 publications

References 74 publications

A review of the design and validation of web- and computer-based 24-h dietary recall tools

A review of the design and validation of web- and computer-based 24-h dietary recall tools

Improved interpretation of studies comparing methods of dietary assessment: combining equivalence testing with the limits of agreement

Measuring Dietary Intake

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