The validity of a web-based FFQ assessed by doubly labelled water and multiple 24-h recalls

Anine C. Medin*, Monica H. Carlsen, Catherine Hambly, John R. Speakman, Susanne Strohmaier, Lene F. Andersen

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)
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Abstract

The aim of this study was to validate the estimated habitual dietary intake from a newly developed web-based FFQ (WebFFQ), for use in an adult population in Norway. In total, ninety-two individuals were recruited. Total energy expenditure (TEE) measured by doubly labelled water was used as the reference method for energy intake (EI) in a subsample of twenty-nine women, and multiple 24-h recalls (24HR) were used as the reference method for the relative validation of macronutrients and food groups in the entire sample. Absolute differences, ratios, crude and deattenuated correlations, cross-classifications, Bland-Altman plot and plots between misreporting of EI (EI-TEE) and the relative misreporting of food groups (WebFFQ-24HR) were used to assess the validity. Results showed that EI on group level was not significantly different from TEE measured by doubly labelled water (0·7 MJ/d), but ranking abilities were poor (r -0·18). The relative validation showed an overestimation for the majority of the variables using absolute intakes, especially for the food groups 'vegetables' and 'fish and shellfish', but an improved agreement between the test and reference tool was observed for energy adjusted intakes. Deattenuated correlation coefficients were between 0·22 and 0·89, and low levels of grossly misclassified individuals (0-3 %) were observed for the majority of the energy adjusted variables for macronutrients and food groups. In conclusion, energy estimates from the WebFFQ should be used with caution, but the estimated absolute intakes on group level and ranking abilities seem acceptable for macronutrients and most food groups.

Original languageEnglish
Pages (from-to)1106-1117
Number of pages12
JournalBritish Journal of Nutrition
Volume118
Issue number12
Early online date5 Dec 2017
DOIs
Publication statusPublished - 28 Dec 2017

Fingerprint

Energy Intake
Water
Energy Metabolism
Food
Shellfish
Food Chain
Norway
Vegetables
Fishes
Eating
Population

Keywords

  • Dietary assessments
  • Doubly labelled water
  • FFQ
  • Validation
  • Web-based FFQ

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

Cite this

The validity of a web-based FFQ assessed by doubly labelled water and multiple 24-h recalls. / Medin, Anine C.; Carlsen, Monica H.; Hambly, Catherine; Speakman, John R.; Strohmaier, Susanne; Andersen, Lene F.

In: British Journal of Nutrition, Vol. 118, No. 12, 28.12.2017, p. 1106-1117.

Research output: Contribution to journalArticle

Medin, Anine C. ; Carlsen, Monica H. ; Hambly, Catherine ; Speakman, John R. ; Strohmaier, Susanne ; Andersen, Lene F. / The validity of a web-based FFQ assessed by doubly labelled water and multiple 24-h recalls. In: British Journal of Nutrition. 2017 ; Vol. 118, No. 12. pp. 1106-1117.
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abstract = "The aim of this study was to validate the estimated habitual dietary intake from a newly developed web-based FFQ (WebFFQ), for use in an adult population in Norway. In total, ninety-two individuals were recruited. Total energy expenditure (TEE) measured by doubly labelled water was used as the reference method for energy intake (EI) in a subsample of twenty-nine women, and multiple 24-h recalls (24HR) were used as the reference method for the relative validation of macronutrients and food groups in the entire sample. Absolute differences, ratios, crude and deattenuated correlations, cross-classifications, Bland-Altman plot and plots between misreporting of EI (EI-TEE) and the relative misreporting of food groups (WebFFQ-24HR) were used to assess the validity. Results showed that EI on group level was not significantly different from TEE measured by doubly labelled water (0·7 MJ/d), but ranking abilities were poor (r -0·18). The relative validation showed an overestimation for the majority of the variables using absolute intakes, especially for the food groups 'vegetables' and 'fish and shellfish', but an improved agreement between the test and reference tool was observed for energy adjusted intakes. Deattenuated correlation coefficients were between 0·22 and 0·89, and low levels of grossly misclassified individuals (0-3 {\%}) were observed for the majority of the energy adjusted variables for macronutrients and food groups. In conclusion, energy estimates from the WebFFQ should be used with caution, but the estimated absolute intakes on group level and ranking abilities seem acceptable for macronutrients and most food groups.",
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note = "The authors thank Peter Thomson for conducting the laboratory analysis on the DLW, and Helene Astrup and Ida Sofie Kaasa for conducting telephone 24HR. This study was funded by the Institute of Basic Medical Sciences, University of Oslo, with supplementary funds from the Throne Holst Nutrition Research Foundation. The funders had no role in the design, analysis or writing of this article. The authors’ roles in the study were as follows: A. C. M., C. H., J. R. S., L. F. A.: conception and design; A. C. M.: acquisition of data; A. C. M., M. H. C., C. H., J. R. S., S. S., L. F. A.: analysis and interpretation of data; A. C. M.: drafted the manuscript; A. C. M., M. H. C., C. H., J. R. S., S. S., L. F. A.: critically revised the manuscript; L. F. A.: supervision and obtained funding. The authors declare that there are no conflicts of interest.",
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N1 - The authors thank Peter Thomson for conducting the laboratory analysis on the DLW, and Helene Astrup and Ida Sofie Kaasa for conducting telephone 24HR. This study was funded by the Institute of Basic Medical Sciences, University of Oslo, with supplementary funds from the Throne Holst Nutrition Research Foundation. The funders had no role in the design, analysis or writing of this article. The authors’ roles in the study were as follows: A. C. M., C. H., J. R. S., L. F. A.: conception and design; A. C. M.: acquisition of data; A. C. M., M. H. C., C. H., J. R. S., S. S., L. F. A.: analysis and interpretation of data; A. C. M.: drafted the manuscript; A. C. M., M. H. C., C. H., J. R. S., S. S., L. F. A.: critically revised the manuscript; L. F. A.: supervision and obtained funding. The authors declare that there are no conflicts of interest.

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N2 - The aim of this study was to validate the estimated habitual dietary intake from a newly developed web-based FFQ (WebFFQ), for use in an adult population in Norway. In total, ninety-two individuals were recruited. Total energy expenditure (TEE) measured by doubly labelled water was used as the reference method for energy intake (EI) in a subsample of twenty-nine women, and multiple 24-h recalls (24HR) were used as the reference method for the relative validation of macronutrients and food groups in the entire sample. Absolute differences, ratios, crude and deattenuated correlations, cross-classifications, Bland-Altman plot and plots between misreporting of EI (EI-TEE) and the relative misreporting of food groups (WebFFQ-24HR) were used to assess the validity. Results showed that EI on group level was not significantly different from TEE measured by doubly labelled water (0·7 MJ/d), but ranking abilities were poor (r -0·18). The relative validation showed an overestimation for the majority of the variables using absolute intakes, especially for the food groups 'vegetables' and 'fish and shellfish', but an improved agreement between the test and reference tool was observed for energy adjusted intakes. Deattenuated correlation coefficients were between 0·22 and 0·89, and low levels of grossly misclassified individuals (0-3 %) were observed for the majority of the energy adjusted variables for macronutrients and food groups. In conclusion, energy estimates from the WebFFQ should be used with caution, but the estimated absolute intakes on group level and ranking abilities seem acceptable for macronutrients and most food groups.

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