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Data release policy
NCHS policy states that
statistical data gathered must be disseminated to interested consumers as promptly as
resources permit. NCHS releases public-use data files for elementary units (persons,
events, health facilities, and services) in a manner that will not compromise the
confidentiality guaranteed to the respondents who supplied the original data. The measures
taken to protect confidential information include the following:
Personal names and addresses, except
those on some nonconfidential institutional records, never appear on the data tapes
Certificate numbers of vital records
never appear on the tape records
Data from localities having less
than 100,000 population are classified into geographic areas that reflect population size
but do not reveal specific geographic names
Rare characteristics that might help
to identify an individual or establishment are omitted.
Additionally, users of NCHS data files must agree to comply with data-use restrictions to avoid inadvertent disclosure of confidential information.
This page last reviewed June 18, 2002
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