A food frequency questionnaire differs from a 24-hour recall in what way:

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A food frequency questionnaire differs from a 24-hour recall because it does not ask about typical meal patterns. A food frequency questionnaire asks about intakes of different types of foods and usual portion sizes over time, and does not allow open-ended responses. The types of foods asked about on a food frequency questionnaire may be changed to reflect the population of interest.

A Food Frequency Questionnaire Differs from a 24-Hour Recall in What