Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender

Nina Lyng; Sisse Fagt; Michael Davidsen; Camilla Hoppe; Bjørn Evald Holstein; Inge Tetens

doi:10.3402/fnr.v57i0.19621

Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender

Nina Lyng, Sisse Fagt, Michael Davidsen, Camilla Hoppe, Bjørn Evald Holstein, Inge Tetens

Abstract

BACKGROUND: Packed lunch is the dominant lunch format in many countries including Denmark. School lunch is consumed unsupervised, and self-reported recalls are appropriate in the school setting. However, little is known about the accuracy of recalls in relation to packed lunch.

OBJECTIVE: To assess the qualitative recall accuracy of self-reported consumption of packed lunch among Danish 11-year-old children in relation to gender and dietary assessment method.

DESIGN: A cross-sectional dietary recall study of packed lunch consumption. Digital images (DIs) served as an objective reference method to determine food items consumed. Recalls were collected with a lunch recall questionnaire (LRQ) comprising an open-ended recall (OE-Q) and a pre-coded food group prompted recall (PC-Q). Individual interviews (INTs) were conducted successively. The number of food items was identified and accuracy was calculated as match rates (% identified by DIs and reported correctly) and intrusion rates (% not identified by DIs but reported) were determined.

SETTING AND SUBJECTS: Three Danish public schools from Copenhagen. A total of 114 Danish 11-year-old children, mean (SE) age=11.1 (0.03), and body mass index=18.2 (0.26).

RESULTS: The reference (DIs) showed that girls consumed a higher number of food items than boys [mean (SE) 5.4 (0.25) vs. 4.6 (0.29) items (p=0.05)]. The number of food items recalled differed between genders with OE-Q recalls (p=0.005) only. Girls' interview recalls were more accurate than boys' with higher match rates (p=0.04) and lower intrusion rates (p=0.05). Match rates ranged from 67-90% and intrusion rates ranged from 13-39% with little differences between girls and boys using the OE-Q and PC-Q methods.

CONCLUSION: Dietary recall validation studies should not only consider match rates as an account of accuracy. Intrusions contribute to over-reporting in non-validation studies, and future studies should address recall accuracy and inaccuracies in relation to gender and recall method.

Originalsprog	Engelsk
Artikelnummer	19621
Tidsskrift	Food & Nutrition Research
Vol/bind	57
Antal sider	7
ISSN	1654-661X
DOI	https://doi.org/10.3402/fnr.v57i0.19621
Status	Udgivet - 2013
Udgivet eksternt	Ja

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10.3402/fnr.v57i0.19621Licens: CC BY-NC

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title = "Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender",

abstract = "BACKGROUND: Packed lunch is the dominant lunch format in many countries including Denmark. School lunch is consumed unsupervised, and self-reported recalls are appropriate in the school setting. However, little is known about the accuracy of recalls in relation to packed lunch.OBJECTIVE: To assess the qualitative recall accuracy of self-reported consumption of packed lunch among Danish 11-year-old children in relation to gender and dietary assessment method.DESIGN: A cross-sectional dietary recall study of packed lunch consumption. Digital images (DIs) served as an objective reference method to determine food items consumed. Recalls were collected with a lunch recall questionnaire (LRQ) comprising an open-ended recall (OE-Q) and a pre-coded food group prompted recall (PC-Q). Individual interviews (INTs) were conducted successively. The number of food items was identified and accuracy was calculated as match rates (% identified by DIs and reported correctly) and intrusion rates (% not identified by DIs but reported) were determined.SETTING AND SUBJECTS: Three Danish public schools from Copenhagen. A total of 114 Danish 11-year-old children, mean (SE) age=11.1 (0.03), and body mass index=18.2 (0.26).RESULTS: The reference (DIs) showed that girls consumed a higher number of food items than boys [mean (SE) 5.4 (0.25) vs. 4.6 (0.29) items (p=0.05)]. The number of food items recalled differed between genders with OE-Q recalls (p=0.005) only. Girls' interview recalls were more accurate than boys' with higher match rates (p=0.04) and lower intrusion rates (p=0.05). Match rates ranged from 67-90% and intrusion rates ranged from 13-39% with little differences between girls and boys using the OE-Q and PC-Q methods.CONCLUSION: Dietary recall validation studies should not only consider match rates as an account of accuracy. Intrusions contribute to over-reporting in non-validation studies, and future studies should address recall accuracy and inaccuracies in relation to gender and recall method.",

keywords = "School lunch, Self-reported intake, recall accuracy",

author = "Nina Lyng and Sisse Fagt and Michael Davidsen and Camilla Hoppe and Holstein, {Bj{\o}rn Evald} and Inge Tetens",

year = "2013",

doi = "10.3402/fnr.v57i0.19621",

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volume = "57",

journal = "Scandinavian Journal of Nutrition/Naringsforskning, Supplement",

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publisher = "Co-Action Publishing",

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TY - JOUR

T1 - Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender

AU - Lyng, Nina

AU - Fagt, Sisse

AU - Davidsen, Michael

AU - Hoppe, Camilla

AU - Holstein, Bjørn Evald

AU - Tetens, Inge

PY - 2013

Y1 - 2013

N2 - BACKGROUND: Packed lunch is the dominant lunch format in many countries including Denmark. School lunch is consumed unsupervised, and self-reported recalls are appropriate in the school setting. However, little is known about the accuracy of recalls in relation to packed lunch.OBJECTIVE: To assess the qualitative recall accuracy of self-reported consumption of packed lunch among Danish 11-year-old children in relation to gender and dietary assessment method.DESIGN: A cross-sectional dietary recall study of packed lunch consumption. Digital images (DIs) served as an objective reference method to determine food items consumed. Recalls were collected with a lunch recall questionnaire (LRQ) comprising an open-ended recall (OE-Q) and a pre-coded food group prompted recall (PC-Q). Individual interviews (INTs) were conducted successively. The number of food items was identified and accuracy was calculated as match rates (% identified by DIs and reported correctly) and intrusion rates (% not identified by DIs but reported) were determined.SETTING AND SUBJECTS: Three Danish public schools from Copenhagen. A total of 114 Danish 11-year-old children, mean (SE) age=11.1 (0.03), and body mass index=18.2 (0.26).RESULTS: The reference (DIs) showed that girls consumed a higher number of food items than boys [mean (SE) 5.4 (0.25) vs. 4.6 (0.29) items (p=0.05)]. The number of food items recalled differed between genders with OE-Q recalls (p=0.005) only. Girls' interview recalls were more accurate than boys' with higher match rates (p=0.04) and lower intrusion rates (p=0.05). Match rates ranged from 67-90% and intrusion rates ranged from 13-39% with little differences between girls and boys using the OE-Q and PC-Q methods.CONCLUSION: Dietary recall validation studies should not only consider match rates as an account of accuracy. Intrusions contribute to over-reporting in non-validation studies, and future studies should address recall accuracy and inaccuracies in relation to gender and recall method.

AB - BACKGROUND: Packed lunch is the dominant lunch format in many countries including Denmark. School lunch is consumed unsupervised, and self-reported recalls are appropriate in the school setting. However, little is known about the accuracy of recalls in relation to packed lunch.OBJECTIVE: To assess the qualitative recall accuracy of self-reported consumption of packed lunch among Danish 11-year-old children in relation to gender and dietary assessment method.DESIGN: A cross-sectional dietary recall study of packed lunch consumption. Digital images (DIs) served as an objective reference method to determine food items consumed. Recalls were collected with a lunch recall questionnaire (LRQ) comprising an open-ended recall (OE-Q) and a pre-coded food group prompted recall (PC-Q). Individual interviews (INTs) were conducted successively. The number of food items was identified and accuracy was calculated as match rates (% identified by DIs and reported correctly) and intrusion rates (% not identified by DIs but reported) were determined.SETTING AND SUBJECTS: Three Danish public schools from Copenhagen. A total of 114 Danish 11-year-old children, mean (SE) age=11.1 (0.03), and body mass index=18.2 (0.26).RESULTS: The reference (DIs) showed that girls consumed a higher number of food items than boys [mean (SE) 5.4 (0.25) vs. 4.6 (0.29) items (p=0.05)]. The number of food items recalled differed between genders with OE-Q recalls (p=0.005) only. Girls' interview recalls were more accurate than boys' with higher match rates (p=0.04) and lower intrusion rates (p=0.05). Match rates ranged from 67-90% and intrusion rates ranged from 13-39% with little differences between girls and boys using the OE-Q and PC-Q methods.CONCLUSION: Dietary recall validation studies should not only consider match rates as an account of accuracy. Intrusions contribute to over-reporting in non-validation studies, and future studies should address recall accuracy and inaccuracies in relation to gender and recall method.

KW - School lunch

KW - Self-reported intake

KW - recall accuracy

U2 - 10.3402/fnr.v57i0.19621

DO - 10.3402/fnr.v57i0.19621

M3 - Journal article

C2 - 23483301

SN - 1102-6510

VL - 57

JO - Scandinavian Journal of Nutrition/Naringsforskning, Supplement

JF - Scandinavian Journal of Nutrition/Naringsforskning, Supplement

M1 - 19621

ER -

Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender

Abstract

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