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NHANES Dietary Web Tutorial

Dietary Data Structure & Contents


This module describes how Continuous NHANES dietary data are structured and organized. In this context, structure refers to the way the data are organized within the NHANES framework.


Task 1: Describe How Dietary Data Fit into the NHANES Data Structure

Before you begin a search for any specific diet-related variables on the website, you should first understand the NHANES data structure and how diet files fit in.


Task 2: Describe Dietary Recall Data Files

Data collected from the dietary recall interviews are found in four files located in the Examination section.


Task 3: Describe Food Frequency Data Files

Data collected from the food frequency questionnaires are found in two files located in the Questionnaire section.


Task 4: Describe Dietary Supplement Data Files

Data collected from the dietary supplement interviews are found in five files located in the Questionnaire section.


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