Mahshid Dehghan|Silvia del Cerro|Xiaohe Zhang|Jose Maini Cuneo|Bruno Linetzky|Rafael D??az|Anwar T. Merchant
Validation of a Semi-Quantitative Food Frequency Questionnaire for Argentinean Adults
Population Health Research Institute|McMaster University|Estudios Clínicos Latinoamérica|Population Health Research Institute|McMaster University|Estudios Clínicos Latinoamérica|Estudios Clínicos Latinoamérica|Estudios Clínicos Latinoamérica|University of South Carolina
food frequency questionnaire ffq commonly used method ranking individuals based long term food intake large epidemiological studies validation ffq specific populations essential food consumption culture dependent aim study develop semiquantitative food frequency questionnaire sffq evaluate validity reproducibility estimating nutrient intake urban rural areas argentinaoverall 256 participants argentinean arm ongoing prospective urban rural epidemiological study pure enrolled development validation sffq one hundred individuals participated sffq development 156 individuals completed sffqs two occasions four 24hour dietary recalls 24drs urban three 24drs rural areas oneyear period correlation coefficients r deattenuated correlation coefficients 24drs sffq calculated macro micronutrients level agreement two methods evaluated using classification extreme quartiles blandaltman method reproducibility sffq assessed pearson correlation coefficients intraclass correlation coefficients icc sffq consists 96 food items urban rural settings deattenuated correlations exceeded 04 nutrients classification adjacent quartiles 70 urban 60 rural settings pearson correlation two sffqs varied 030056 032060 urban rural settings respectivelyour results showed sffq moderate relative validity reproducibility macro micronutrients relation comparison method used rank individuals based habitual nutrient intake