Validation of a Food Frequency Questionnaire by food groups for the adolescent population

Revista Brasileira de Epidemiologia

Slater, Betzabeth¹  Enes, Carla Cristina¹  Voci, Silvia Maria¹ 

[1] Universidade de São Paulo

关键词: Adolescents;    Dietary assessment;    Food groups;    Food frequency questionnaire;    Validity;   

DOI  :  10.1590/S1415-790X2008000400005

学科分类：过敏症与临床免疫学

来源: SciELO

【 摘 要 】

OBJECTIVE:To verify the validity of the Food Frequency Questionnaire for Adolescents inorder to evaluate food group consumption among adolescents from Piracicaba,São Paulo.
METHODS: The study was carried out with 94 adolescents, ranging from11 to 15 years of age, from the public education system. Food consumption wasassessed by the Food Frequency Questionnaire for Adolescents (QFAA) and theaverage of two 24-hour recalls (R24h) was used as a reference method. The fooditems were classified into 18 groups. Descriptive analyses, paired t-test andWilcoxon test, Pearson and Spearman coefficients were performed. Analysis ofquartiles and Kappa test were used. Correlation coefficients were adjusted bythe within-subject variance of the 24-hour recalls, from one-way ANOVA.
RESULTS: No significant differences were found between the tools forrice, pasta, meat, soft drinks, and artificial juices. The correlation coefficientsadjusted by within-subject variability ranged from -0.26 to 0.78. Agreementof individuals' classification in quartiles of food consumption for both methodsranged from 22% (pasta) to 50% (beans). For discordant quartiles, the groupsthat presented more than 10% of misclassified subjects were pasta (19%), meat(13%) and fats (11%). The values of the Kappa test ranged from -0.15 (pastas)to 0.56 (beans). The food frequency questionnaire over-estimated the consumptionof almost all the food groups and under-estimated the groups of oils, beans,meats, and soft drinks
CONCLUSION: The food frequency questionnaire revealed good validity forbeans, vegetables, milk and dairy, cookies with filling, and rice.

【 授权许可】

CC BY