Relative validity of a food frequency questionnaire for adolescents from a capital in the Northeastern region of Brazil

Autor: Juliana dos Santos Vaz, Maylla Luanna Barbosa Martins Bragança, Ana Karina Texeira da Cunha França, Antônio Augusto Moura da Silva, M.C. Assunção, Eduarda Gomes Bogea, Barbieri, Heloisa Bettiol
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Brazilian Journal of Medical and Biological Research v.54 n.1 2021
Brazilian Journal of Medical and Biological Research
Associação Brasileira de Divulgação Científica (ABDC)
instacron:ABDC
Brazilian Journal of Medical and Biological Research, Vol 54, Iss 1 (2020)
Popis: The present study was conducted to evaluate the validity of the Food Frequency Questionnaire (FFQ) used in the RPS Birth Cohort Consortium (Ribeirão Preto, Pelotas, and São Luís) to assess dietary intake of adolescents from São Luís, Maranhão. The research was developed with 152 adolescents aged 18 and 19 years. For the validation of the FFQ, the average of three 24-hour recalls (24HRs) was used as the reference method. The mean and standard deviation of energy and nutrient intake extracted from the surveys were estimated. The paired Student's t-test was used to verify the differences between the instruments. Pearson correlation coefficient, intraclass correlation coefficient (ICC), weighted Kappa, and the Bland-Altman plot were calculated in order to measure the agreement. The study adopted a level of significance
Databáze: OpenAIRE