Dietary Data Structure & Contents

Purpose

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 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.

• Key Concepts about How Dietary Data Fit into the NHANES Data Structure

Task 2: Describe Dietary Recall Data Files

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

• Key Concepts about Dietary Recall Data Files

Task 3: Describe Food Frequency Data Files

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

• Key Concepts about Food Frequency Data Files

Task 4: Describe Dietary Supplement Data Files

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

• Key Concepts about Dietary Supplement Data Files

NHANES Dietary Tutorial Home

Dietary Data Survey Orientation

Preparing a Dietary Analytic Dataset

Basic Dietary Analyses

Advanced Dietary Analyses

Additional Resources

National Center for Health Statistics
3311 Toledo Road
Hyattsville, MD 20782
Phone: 1-866-441-NCHS (6247)
For data inquiries, use
nchsquery@cdc.gov

Problems or comments about the Tutorial?
Email the Tutorial Team: NHANESWebTutorial@cdc.gov

Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30333, U.S.A
Tel: (404) 639-3311 / Public Inquiries: (404) 639-3534 / (800) 311-3435