Wireless Substitution: Early Release of Estimates From the National Health Inteview Survey, January - June 2009

摘要

Preliminary results from the January-June 2009 National Health Interview Survey (NHIS) indicate that the number of American homes with only wireless telephones continues to grow. More than one of every five American homes (22.7%) had only wireless telephones (also known as cellular telephones, cell phones, or mobile phones) during the first half of 2009--an increase of 2.5 percentage points since the second half of 2008. In addition, one of every seven American homes (14.7%) had a landline yet received all or almost all calls on wireless telephones. This report presents the most up-to-date estimates available from the federal government concerning the size and characteristics of these populations.