Forty-four percent of U.S. homes now have only mobile phones, according to preliminary results released today from the Centers for Disease Control and Prevention’s National Health Interview Survey. The results from the January-June survey period represent an increase of 3% from the second half of 2013, CDC said. It also said that more than half of adults between the ages of 18 and 44 and children younger than 18 live in wireless-only households. The survey of 22,438 households also found that 33.1% of households that had both wireline and wireless phones got all or nearly all of their calls on wireless phones. The CDC continued to find that people with lower incomes are more likely to rely only on mobile phones. “Adults living in poverty (59.1%) were more likely than those living near poverty (50.8%) and higher income adults (40.8%) to be living in households with only wireless telephones,” it said.