Wireless substitution: state-level estimates from the National Health Interview Survey, January-December 2007.
OBJECTIVE
This report presents state-level estimates of the percentage of households that do not have a landline telephone, but do have at least one wireless telephone. These wireless-only households made up 14.7% of U.S. households in 2007. The report also presents state-level estimates of the percentage of adults living in wireless-only households. These wireless-only adults made up 13.6% of U.S. adults in 2007.


METHODS
A two-sample modeling strategy was used to estimate the prevalence of wireless-only households and adults by state. This modeling was based on data from the 2007 National Health Interview Survey and the 2008 Current Population Survey's Annual and Social Economic Supplement.


RESULTS
The results show that the prevalence of wireless-only households and adults in 2007 varied substantially across states. State-level estimates ranged from 5.1% (Vermont) to 26.2% (Oklahoma) of households and from 4.0% (Delaware) to 25.1% (Oklahoma) of adults. In addition, approximately one out of four adults (25.4%) living in the District of Columbia were wireless-only.
Blumberg
Stephen J
SJ
Division of Health Interview Statistics, National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, MD 20782, USA.
Luke
Julian V
JV
Davidson
Gestur
G
Davern
Michael E
ME
Yu
Tzy-Chyi
TC
Soderberg
Karen
K
D000328:Adult; D040421:Cell Phone / Q000706:statistics & numerical data*; D003625:Data Collection / Q000379:methods; D003627:Data Interpretation, Statistical; D004812:Epidemiologic Methods; D006306:Health Surveys; D006801:Humans; D009309:National Center for Health Statistics, U.S.; D013689:Telephone / Q000706:statistics & numerical data*; D014481:United States