Learn More
BACKGROUND Epidemiologic studies must have a reliable method for evaluating food intake; therefore, valid, precise, and practical instruments are essential. OBJECTIVE To assess the relative validity and estimate the calibration factors of a semiquantitative food frequency questionnaire (FFQ) for adolescents. DESIGN Validation and calibration study. (More)
A test-retest study was carried out to assess the reproducibility of a semi-quantitative food frequency questionnaire (SFFQ) designed for adolescents. The study group included 108 individuals. The mean interval between the two interviews was 20 days. Three days of food records from 430 adolescents were used to define the items and portions in the SFFQ.(More)
OBJECTIVE To estimate energy and nutrient intake and prevalence of inadequate micronutrient intake among Brazilian adults. METHODS Data from the National Dietary Survey, from the 2008-2009 Household Budget Survey, were used. Food consumption was evaluated through food record on two non-consecutive days. A total of 21,003 individuals (52.5% women), between(More)
OBJECTIVE To assess energy and nutrient consumption and the prevalence of inadequate micronutrient intake among Brazilian adolescents. METHODS A random sample composed of 6,797 adolescents (49.7% girls), between 10 and 18 years old, was evaluated in the first National Dietary Survey, part of the Household Budget Survey carried out in 2008-2009. Expansion(More)
OBJECTIVE To verify associations of income and education with nutrient intakes in Brazilian adults. DESIGN Data from the population-based National Dietary Survey conducted in 2008-2009. Family per capita income and education levels were categorized into quartiles. Prevalences of inadequate nutrient intakes and excessive intakes of saturated fat and Na(More)
Identification of major sources of energy in the diet helps to implement dietary recommendations to reduce obesity. To determine the food sources of energy consumed by Brazilians, we used the traditional method of ranking energy contribution of selected food groups and also compared days with and without consumption of specific food groups. Analysis was(More)
For dietary intake assessments, one needs to know the minimum 24-hour recall or food record replications that are required to estimate usual energy and nutrient intake and to classify subjects correctly according to their nutrient intake. Data from two different studies on dietary intake that were carried out with 300 adults and 169 adolescents in the Rio(More)
OBJECTIVE The present study describes the procedure and approaches needed to adapt and harmonise the GloboDiet methodology, a computer- and interview-based 24 h dietary recall, for use in two Latin American pilot countries, Brazil and Mexico. DESIGN About seventy common and country-specific databases on foods, recipes, dietary supplements, quantification(More)
OBJECTIVE To estimate the prevalence of inadequate nutrient intake in the Brazilian elderly. METHODS This study was based on data from the National Dietary Survey, part of the Household Budget Survey 2008-2009. All individuals aged 60 and over, totaling 4,322 individuals, were included. Individual food intake was obtained from food records from two(More)
  • 1