@Article{info:doi/10.2196/jmir.2458,
author="Christensen, Sara E
and M{\"o}ller, Elisabeth
and Bonn, Stephanie E
and Ploner, Alexander
and Wright, Antony
and Sj{\"o}lander, Arvid
and B{\"a}lter, Olle
and Lissner, Lauren
and B{\"a}lter, Katarina",
title="Two New Meal- and Web-Based Interactive Food Frequency Questionnaires: Validation of Energy and Macronutrient Intake",
journal="J Med Internet Res",
year="2013",
month="Jun",
day="05",
volume="15",
number="6",
pages="e109",
keywords="validity; reproducibility; food frequency questionnaire; Internet; weighed food record; doubly labeled water; adult",
abstract="Background: Meal-Q and its shorter version, MiniMeal-Q, are 2 new Web-based food frequency questionnaires. Their meal-based and interactive format was designed to promote ease of use and to minimize answering time, desirable improvements in large epidemiological studies. Objective: We evaluated the validity of energy and macronutrient intake assessed with Meal-Q and MiniMeal-Q as well as the reproducibility of Meal-Q. Methods: Healthy volunteers aged 20-63 years recruited from Stockholm County filled out the 174-item Meal-Q. The questionnaire was compared to 7-day weighed food records (WFR; n=163), for energy and macronutrient intake, and to doubly labeled water (DLW; n=39), for total energy expenditure. In addition, the 126-item MiniMeal-Q was evaluated in a simulated validation using truncated Meal-Q data. We also assessed the answering time and ease of use of both questionnaires. Results: Bland-Altman plots showed a varying bias within the intake range for all validity comparisons. Cross-classification of quartiles placed 70{\%}-86{\%} in the same/adjacent quartile with WFR and 77{\%} with DLW. Deattenuated and energy-adjusted Pearson correlation coefficients with the WFR ranged from r=0.33-0.74 for macronutrients and was r=0.18 for energy. Correlations with DLW were r=0.42 for Meal-Q and r=0.38 for MiniMeal-Q. Intraclass correlations for Meal-Q ranged from r=0.57-0.90. Median answering time was 17 minutes for Meal-Q and 7 minutes for MiniMeal-Q, and participants rated both questionnaires as easy to use. Conclusions: Meal-Q and MiniMeal-Q are easy to use and have short answering times. The ranking agreement is good for most of the nutrients for both questionnaires and Meal-Q shows fair reproducibility. ",
issn="14388871",
doi="10.2196/jmir.2458",
url="http://www.jmir.org/2013/6/e109/",
url="https://doi.org/10.2196/jmir.2458",
url="http://www.ncbi.nlm.nih.gov/pubmed/23739995"
}