Development and Validation of a Food Frequency Questionnaire to Assess Fermented Food Consumption in Adults
The fermented food intake questionnaire (FFIQ), developed to assess habitual intake in adults aged 18–60 years, was validated against six 24-h dietary recalls. The FFIQ showed reasonable validity and repeatability for total fermented food intake as well as for most individual foods and food categories. ABSTRACT Background Fermented foods can confer benefits to human health
