Survey Design Factors
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The Survey Design Factors course includes three modules:
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Module 10. Sample Design
Module 11. Weighting
Module 12. Variance Estimation
These three modules provide an overview of the design features for the Continuous NHANES samples, as well as how to correctly account for these design features in analyses.
The Sample Design module describes the complex sampling design of NHANES, which includes multi-stage, unequal probability, and cluster sampling methods. This module also explains how to specify sampling parameters in an analysis. The Weighting module describes how NHANES weights are calculated to take into account survey nonreponse, oversampling, post-stratification, and sampling error. More importantly, this module teaches how to select the correct weights for an analysis. The Variance Estimation module introduces methods to calculate variance estimates and degrees of freedom.
These modules will provide analysts who are new to NHANES with an in-depth knowledge of the survey™s sampling and weighting procedures and basic tools for calculating variance estimates.
If you are an experienced analyst who only needs specific information to help you complete an analysis on your own, you can pick and choose topics of interest from the navigation bar to the left, or from the Tutorial A-Z Index. You may also go to the Sample Code and Datasets page to download and modify sample programs and datasets for your own use.
The computer software, knowledge, and skills requirements are listed for your convenience on the Software & Technical Requirements page. The Tech Tips page can help you troubleshoot if you run into technical difficulties. Before beginning the course, please see the Jump Start Guide for more information about how to use the tutorial and its features.
Course Registration and Quizzes
Go to the CDC/ATSDR Training and Continuing Education Online at http://www.cdc.gov/phtnonline. If you have not registered as a participant, click on New Participant to create a user ID and password; otherwise click on Participant Login and login.
Once logged on to the CDC/ATSDR Training and Continuing Education Online website, you will be on the Participant Services page. Click on Search and Register. Enter the course number WB1161 or a keyword under Keyword Search. Click on View.
Click on the course title NHANES Web Tutorial - Survey Orientation. Select the type of CE credit you would like to receive and then Submit. Three demographic questions will come up. Complete the questions and then Submit. A message will come up thanking you for registering for the course. After completing the course you will need to take the test and complete a course evaluation at the end to receive credit. A record of your course completion will be located in the Transcript and Certificate section of the training website.
If you have any questions or problems with the CDC/ATSDR Training and Continuing Education Online website please contact:
CDC/ATSDR Training and Continuing Education Online
1-800-41TRAIN or 404-639-12922
Email at
ce@cdc.gov
To learn more about the CEU, CME, and CNE credit offered for this course, see the Continuing Professional Education page.
Page Last Modified: March 26, 2008
National Center for Health
Statistics
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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