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Abstract Details

Activity Number: 69
Type: Topic Contributed
Date/Time: Sunday, July 29, 2012 : 4:00 PM to 5:50 PM
Sponsor: Section on Government Statistics
Abstract - #305477
Title: Disclosure Avoidance at the National Center for Health Statistics
Author(s): Joe Fred Gonzalez*+ and Eve Powell-Griner
Companies: National Center for Health Statistics and National Center for Health Statistics
Address: 3311 Toledo Rd., Hyattsville, MD, 20782-2064, United States
Keywords: confidentiality ; privacy ; DRB
Abstract:

A major responsibility of the Disclosure Review Board (DRB) at the National Center for Health Statistics (NCHS) is to protect the confidentiality and privacy of its survey respondents, persons or establishments. Before any public-use files (PUFs) can be released, the NCHS DRB must feel confident that measures have been taken to ensure disclosure avoidance where necessary. There are several surveys conducted by the NCHS and each has its own techniques for avoiding disclosure of identifiable data. This paper will discuss some of these disclosure avoidance techniques such as perturbation of variables, coarsening of data, swapping variables, suppression, and not releasing the data as a PUF. In the case where data are not released as a PUF, researchers could possibly analyze a restricted data set under a signed confidentiality agreement via the NCHS Research Data Center.


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