Agreement of dietary fiber and calorie intake values according to the choice of nutrient composition and household measure tables

Michele Drehmer,Cristiane Melere,Suzi Alves Camey,Shaline Modena Reinheimer

doi:10.1590/1678-98652017000200008

Abstract

ABSTRACT Objective: To analyze the variations in the daily intake of dietary fiber and calories according to the different nutrient composition and homemade measure tables. Methods: Five different methods based on different nutrient composition and household measure tables were used to calculate daily calorie and fiber intake, measured using a food frequency questionnaire, of 633 pregnant women receiving care in primary health care units in the Southern region of Brazil; they were selected to participate in a cohort study. The agreement between the five methods was evaluated using the Kappa and weighted Kappa coefficients. The Nutritional Support Table, a Brazilian traditional food composition table and the Brazilian household expenditure survey were used in Method 1. Brazilian Food Composition Table and the Table for the Assessment of Household Measures (Pinheiro) were used in Methods 2 and 3. The average values of all subtypes of food listed in the Brazilian Food Composition Table for each corresponding item in the food frequency questionnaire were calculated in the method 3. The United States Department of Agriculture Food Composition Table and the table complied by Pinheiro were used in Method 4. The Brazilian Food Composition Table and the Brazilian household expenditure survey were used in Method 5. Results: The highest agreement of calorie intake values were found between Methods 2 and 3 (Kappa=0.94; 0.92-0.95), and the lowest agreement was found between Methods 4 and 5 (Kappa=0.46; 0.42-0.50). As for the fiber intake, the highest agreement was found between Methods 2 and 5 (Kappa=0.87; 0.82-0.90), and the lowest agreement was observed between Methods 1 and 4 (Kappa=0.36; 0.3-0.43). Conclusion: Considerable differences were found between the nutritional composition tables. Therefore, the choice of the table can influence the comparability between studies.

Highlights

Food frequency questionnaires are widely used to determine the relationship between diet and disease in epidemiological studies because they are considered low cost and are easy to administer and to use in the analysis of food and nutrient intake
The highest agreement of calorie intake values were found between Methods 2 and 3 (Kappa=0.94; 0.92–0.95), and the lowest agreement was found between Methods 4 and 5 (Kappa=0.46; 0.42–0.50)
As for the fiber intake, the highest agreement was found between Methods 2 and 5 (Kappa=0.87; 0.82–0.90), and the lowest agreement was observed between Methods 1 and 4 (Kappa=0.36; 0.3–0.43)

Summary

Introduction

Food frequency questionnaires are widely used to determine the relationship between diet and disease in epidemiological studies because they are considered low cost and are easy to administer and to use in the analysis of food and nutrient intake. It is important to work with accurate food composition information since there is a reduction in the degree of misclassification and an improvement in risk estimation in studies adddressing the association between diet and disease [1,2]. It is important to check whether the data on food composition tables are constantly updated, considering the changes in food composition over time, improved analytical methods for particular nutrients, or the inclusion of information for new dietary components [3]

Methods

Results

Conclusion