Validity and reproducibility of a food frequency questionnaire to assess food group intake in adolescents.
Cad Saude Publica
; 29(9): 1795-804, 2013 Sep.
Article
em En
| MEDLINE
| ID: mdl-24068225
ABSTRACT
The objective of this study was to assess the validity and reproducibility of a food frequency questionnaire to assess intake of the food groups included in the food guide pyramid for adolescents (FFQ-FP). The final version of the FFQ-FP consisted of 50 food items. The study was carried out with a sample of 109 adolescents over a period of four months. A 24hr recall (24hr) was conducted four times and the FFQ-FP was conducted twice. Validity was determined by comparing the second FFQ-FP and the mean of the four 24hrs, while reproducibility was verified by comparing the results of the two FFQ-FPs. Statistical analysis was carried out using medians, standard deviations, Pearson and intraclass correlations and Kappa statistics to assess concordance. Best results were achieved for the rice (including bread, grains and starches), meats and sugars groups. Weakest correlation was observed for the variable vitamin C. The validity and reproducibility of the FFQ-FP was satisfactory for most variables.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Inquéritos sobre Dietas
/
Inquéritos e Questionários
/
Comportamento Alimentar
Tipo de estudo:
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
/
Qualitative_research
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Cad Saude Publica
Assunto da revista:
SAUDE PUBLICA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
BR
/
BRASIL
/
BRASILE
/
BRAZIL
/
BRESIL