Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender
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Reporting accuracy of packed lunch consumption among Danish 11-year-olds differ by gender. / Lyng, Nina; Fagt, Sisse; Davidsen, Michael; Hoppe, Camilla; Holstein, Bjørn Evald; Tetens, Inge.
I: Food & Nutrition Research, Bind 57, 19621, 2013.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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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
VL - 57
JO - Scandinavian Journal of Nutrition/Naringsforskning, Supplement
JF - Scandinavian Journal of Nutrition/Naringsforskning, Supplement
SN - 1102-6510
M1 - 19621
ER -
ID: 184200569