(Undated)  --  A new analysis shows more than half of Oregon households have completely abandoned landline telephones in favor of cell phones.  Financial assistance website 24/7 Wall Street used data from the National Center for Health Statistics to review the share of adults in wireless-only households in every state.  The percentage in Oregon in 2015 was 50-point-eight-percent, compared to 33-percent in 2010.  Less than seven-percent of households in Oregon were landline-only in 2015.