Relative Validity of a Semi-Quantitative Food Frequency Questionnaire for Adolescents

• Main Authors: Ana Lúcia Silva (Author), Maria Isabel Caldas Januário Fragoso (Author), Francília Maria Carvalho dos Santos Neto (Author), Cristina Paula Fidalgo Negreiros Monteiro Bento (Author), Júlia Maria Vitorino Teles (Author)
• Format: Book
• Published: Karger Publishers, 2020-12-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Introduction: A valid food frequency questionnaire (FFQ) is a priority for epidemiological studies. We aimed to perform a relative validity of an FFQ for Portuguese adolescents. Methods: A semi-quantitative Portuguese FFQ (SQ-PortFood-FQ) was developed and the relative validity performed using the m...