The Commonwealth Fund survey found 80 million people didn't go to the doctor or access other medical services last year because of the cost. That's five million more than two years ago and 17 million more than in 2003. The survey also found nearly half of all working-age U.S. adults, 84 million people, went without health insurance for a time last year or had out-of-pocket costs that were so high relative to their income they were considered underinsured. Those who were uninsured or had inadequate health insurance were most likely to have trouble affording care.