Thirty percent of adults say they or a family member had to put off medical treatment in the last year because it was too expensive, according to a Gallup poll released Monday. Breaking down those numbers more, nearly 60 percent of uninsured people, the poll indicates, say they have put off medical treatment. Meanwhile, less than a quarter of people enrolled in the government programs — Medicare and Medicaid — told Gallup they have delayed treatments. A quarter of those who have private insurance said the same.