Evaluation of a food frequency questionnaire to determine dietary intake in a large cohort: The SAPALDIA study
Steinemann, N.; Leonhäuser, I.; Probst-Hensch, N.; Grize, L.; Brombach, C. · Aktuelle Ernährungsmedizin · 2012 · Heft 3 · S. 1 bis 1
Bibliografische Angaben
Zusammenfassung
Introduction: Valid and scientifically based assessments of dietary intake at the population level are imperative for further investigations on the impact of diet on health and disease. Food frequency questionnaires (FFQs) are the most common tools used in large epidemiologic studies. Since complete and coherently answered FFQs are necessary to determine dietary intake, guidelines for error analysis and handling of missing information are very important, especially in self-administered paper questionnaires. Aims: First, to establish guidelines for error analysis and handling of missing information in a FFQ devel…
