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   Two new meal- and web-based interactive food frequency questionnaires: Validation of energy and macronutrient intake  
   
نویسنده christensen s.e. ,möller e. ,bonn s.e. ,ploner a. ,wright a. ,sjölander a. ,bälter o. ,lissner l. ,bälter k.
منبع journal of medical internet research - 2013 - دوره : 15 - شماره : 6
چکیده    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.
کلیدواژه Adult; Doubly labeled water; Food frequency questionnaire; Internet; Reproducibility; Validity; Weighed food record
آدرس karolinska institutet,department of medical epidemiology and biostatistics,stockholm,sweden,karolinska institutet,department of medical epidemiology and biostatistics,nobels väg 12a,stockholm,se-171 77, Sweden, karolinska institutet,department of medical epidemiology and biostatistics,stockholm, Sweden, karolinska institutet,department of medical epidemiology and biostatistics,stockholm, Sweden, karolinska institutet,department of medical epidemiology and biostatistics,stockholm, Sweden, uk medical research council,mrc collaborative center for human nutrition research,cambridge, United Kingdom, karolinska institutet,department of medical epidemiology and biostatistics,stockholm, Sweden, kth - royal institute of technology,school of computer science and communication,stockholm, Sweden, university of gothenburg,department of public health and community medicine,gothenburg, Sweden, karolinska institutet,department of medical epidemiology and biostatistics,stockholm, Sweden
 
     
   
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