Comparison of a short version of the Food Frequency Questionnaire with its long version--a cross-sectional analysis in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)

The food frequency questionnaire (FFQ) is the preferred instrument for obtaining dietary information in epidemiological studies. A short form of the FFQ was compared with the original version that was used in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), and also with three 24-hour...

Full description

Saved in:

Bibliographic Details
Published in:	São Paulo medical journal Vol. 133; no. 5; pp. 414 - 420
Main Authors:	Mannato, Livia Welter, Pereira, Taisa Sabrina Silva, Velasquez-Melendez, Gustavo, Cardoso, Letícia de Oliveira, Benseñor, Isabela Martins, Molina, Maria del Carmen Bisi
Format:	Journal Article
Language:	English
Published:	Brazil Associação Paulista de Medicina - APM 01-09-2015 Associação Paulista de Medicina
Subjects:	Adult Aged Brazil Diet Diet - statistics & numerical data Diet Records Diet Surveys - methods Diet Surveys - standards Epidemiologic Methods Epidemiologic studies Feeding Behavior Female Humans Male MEDICINE, GENERAL & INTERNAL Middle Aged Nutrients Questionnaires Reference Values Reproducibility of Results Time Factors Validation studies Nutrientes Dieta Diet Estudos epidemiológicos Estudos de Validação Questionnaires Nutrients Epidemiologic studies Questionários Validation studies
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The food frequency questionnaire (FFQ) is the preferred instrument for obtaining dietary information in epidemiological studies. A short form of the FFQ was compared with the original version that was used in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), and also with three 24-hour dietary recalls. Cross-sectional study carried out in six Brazilian state capitals. Multiple linear regression was used to reduce the original food and drink list of the FFQ, which had contained 114 food items. The frequency of consumption and nutritional composition of the foods were also taken into consideration. To assess the validity of the shortened FFQ, the energy and nutrients values of the 24-hour dietary recalls were deattenuated and log-transformed. The list of the FFQ of ELSA-Brasil was reduced to 76 food items. The intraclass correlation coefficients in the validation study ranged from 0.17 (selenium) to 0.66 (calcium). The number of items was reduced by 33%, while still maintaining relatively good capacity to measure energy and selected nutrients.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	1516-3180 1806-9460 1806-9460 1516-3180
DOI:	10.1590/1516-3180.2014.00533004