Metric: 3 in 10 households have cut the landline

According to the National Health Interview Survey, conducted by the U.S. Center for Disease Control, about three in 10 households either only use mobile phones or rarely take calls on their landlines. During the second half of last year, 16 percent of households only had mobiles, while 13 percent had mobiles and landlines but took nearly all calls on their mobiles. Wireless-only houses grew 2 percent between the first and second half of 2007. In early 2004, only 5 percent of households only had mobile phones. The survey also found that low-income people were more likely to not have landlines and those in mobile phone-only units tended to live with unrelated roommates in rented apartments. The survey involved 13,083 people who were interviewed between July and December last year.

For more on the report:
- read this article from the AP