In this release,the Centers for Disease Control and Prevention's (CDC) National middle for Health Statistics
(NCHS) updates estimates for 15 selected health measures based on data from the January-June 2014 National
Health Interview Survey (NHIS) and presents estimates from 1997 through 2013 for comparison. The 15 Early
Release measures are being published prior to final data editing and final weighting to supply access to the most
recent information from NHIS. The estimates will be updated as each new quarter of NHIS data becomes available.
Two additional periodical reports are published through the Early Release Program. Health Insurance
Coverage: Early Release of Estimates From the National Health Interview Survey (1) is published quarterly and
provides additional estimates of health insurance coverage. Wireless Substitution: Early Release of Estimates From
the National Health Interview Survey (2) is published in June and December and provides selected estimates of
telephone coverage. Other Early Release reports and tabulations on special topics are released as needed. In
addition to these reports, preliminary microdata files containing selected NHIS variables are produced as part of
the Early Release Program. For each data collection year, and these files are made available three times: in approximately
September and December during the data collection year,and in approximately March following the data collection year.
NHIS data users can analyze these files through the NCHS Research Data middle without having to wait for the
final annual NHIS microdata files to be released in approximately June following the end of the data collection year.
Source: cdc.gov