Food frequency questionnaire

Food frequency questionnaire (FFQ) is a questionnaire used to obtain frequency and, in some cases, portion size information about food and beverage consumption over a specified period of time, typically the past month or year. FFQs are a common dietary assessment tool used in large epidemiologic studies of diet and health. Examples of usage include assessment of intake of vitamins and other nutrients, assessment of the intake of toxins, and estimating the prevalence of dietary patterns such as vegetarianism. It is an example of a dietary assessment tool. Food frequency questionnaire (FFQ) is a questionnaire used to obtain frequency and, in some cases, portion size information about food and beverage consumption over a specified period of time, typically the past month or year. FFQs are a common dietary assessment tool used in large epidemiologic studies of diet and health. Examples of usage include assessment of intake of vitamins and other nutrients, assessment of the intake of toxins, and estimating the prevalence of dietary patterns such as vegetarianism. It is an example of a dietary assessment tool. A FFQ includes questions on a set of food and beverage items. For each food or beverage item, there may be questions asking about the following: In addition to foods and beverages, FFQs often ask about the frequency of intake and dosages of commonly consumed dietary supplements. A FFQ that aims to capture total dietary intake includes questions on 80 to 120 food and beverage items, and takes 30 to 60 minutes to complete. FFQs may be interviewer-administered in case of low literacy as well as when being conducted on children.