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Technical Information and Data

Numbered Memos

BRFSS POLICY MEMO 93.3
POLICY ON THE MODIFICATION OF THE ANNUAL CORE INSTRUMENT

The fixed/rotating core instrument distributed for each year is to be used as provided. Substantial change (e.g., changing the wording or the placement of questions, or inserting numerous state-added questions in the core) must be (1) supported by solid scientific evidence (from current survey literature or from an experimental trial) that demonstrates the changes do not affect the quality of core data nor increase total survey error, and (2) agreed upon in consultation with BSB.

Exceptions are allowable for the limited insertion of state-added questions in the core. These exceptions should be agreed upon in consultation with BSB based upon the following criteria:

  1. The topic of the state-added question(s) is directly related to a question topic in the fixed/rotating core.
     

  2. The nature or number of state-added questions is such that they would not be functional as a set of follow-up questions asked after the core and modules.
     

  3. It is reasonably likely that the quality of the data obtained from the state-added question(s) will be lower if the question(s) are not inserted in the core.
     

  4. It is reasonably unlikely that the quality of the data obtained from core questions will be lower due to the insertion of the state-added question(s).

 




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This page last reviewed June 22, 2005

United States Department of Health and Human Services
Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
Division of Adult and Community Health