%0 Journal Article
%@ 14388871
%I JMIR Publications Inc.
%V 15
%N 6
%P e109
%T Two New Meal- and Web-Based Interactive Food Frequency Questionnaires: Validation of Energy and Macronutrient Intake
%A Christensen,Sara E
%A Möller,Elisabeth
%A Bonn,Stephanie E
%A Ploner,Alexander
%A Wright,Antony
%A Sjölander,Arvid
%A Bälter,Olle
%A Lissner,Lauren
%A Bälter,Katarina
%+ Karolinska Institutet, Department of Medical Epidemiology and Biostatistics, Nobels väg 12a, Stockholm, SE-171 77, Sweden, 46 852482361, sara.christensen@ki.se
%K validity
%K reproducibility
%K food frequency questionnaire
%K Internet
%K weighed food record
%K doubly labeled water
%K adult
%D 2013
%7 05.06.2013
%9 Original Paper
%J J Med Internet Res
%G English
%X 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. 
%M 23739995
%R 10.2196/jmir.2458
%U http://www.jmir.org/2013/6/e109/
%U https://doi.org/10.2196/jmir.2458
%U http://www.ncbi.nlm.nih.gov/pubmed/23739995