P Barbieri|R Nishimura|Lívia Castro Crivellenti|Daniela Saes Sartorelli
Relative validation of a quantitative FFQ for use in Brazilian pregnant women
Universidade de São Paulo|Universidade de Ribeirão Preto|Universidade de São Paulo|Universidade de Ribeirão Preto|Universidade de São Paulo|Universidade de Ribeirão Preto|Universidade de São Paulo
evaluate ability ffq designed use brazilian pregnant women estimate nutrient intakes pregnancya prospective study conducted among 103 pregnant women attended brazilian national healthcare service food intake pregnancy evaluated three 24 h dietary recalls 24hr one per trimester pregnancy also two ffq ffq eightyfive food items included questions frequency intake portion sizes two periods first 24 weeks pregnancy pregnancy period whole deattenuated pearsons correlation coefficients joint classification quartiles nutrient intake appliedribeirao preto sao paulo state brazilone hundred three pregnant women aged 1835 yearsacceptable correlation coefficients r 035 found ca k zn mg fibre vitamin c niacin folic acid intake first 24 weeks energy lipids protein carbohydrate fe k zn fibre vitamin b6 riboflavin niacin gestational period whole high proportion study participants 70 categorized adjacent quartiles estimated energy carbohydrate ca k fibre zn cholesterol vitamin riboflavin niacin vitamin c vitamin e folic acid gross misclassification ranged 23 dietary fibre 125 vitamin thiamin sfathe ffq useful tool assessing categories nutrient intake pregnancy since high proportion women classified adjacent quartiles