Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain

Fernández‐Ballart, Joan; Lluís Piñol, Josep; Zazpe, Itzíar; Corella, Dolores; Carrasco, Paula; Toledo, Estefanía; Perez-Bauer, Manuel; Ángel Martínez‐González, Miguel; Salas‐Salvadó, Jordi; M. Martin‐Moreno, José

doi:10.1017/s0007114509993837

Public

Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain

Published in British Journal Of Nutrition • Jan 27, 2010

Authors:

Joan Fernández‐Ballart

Josep Lluís Piñol

Itzíar Zazpe

Abstract

The aim of the present study was to assess reproducibility and relative validity of a self-administered FFQ used in the PREDIMED Study, a clinical trial for primary prevention of CVD by Mediterranean diet in a population at high cardiovascular risk. The FFQ was administered twice (FFQ1 and FFQ2) to ...

Subject

Intraclass correlation

Reproducibility

Medicine

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