Eighty-two percent of people in the U.S. think that the health care system in the country should be fundamentally changed, according to a study released by The Commonwealth Fund.

A Harris Interactive poll of 1,000 people also found that nine of 10 people wanted presidential candidates to propose plans that would improve quality, provide affordable coverage to all and cover more people.

Many also said that the current system allows inefficient conduct. One in three people said that in the past two years a doctor had ordered a test that had already been done or suggested unnecessary treatment.

Just under half said that they had experienced poor care such as not getting test results or doctors not sharing information. About three-quarters said they were frustrated with trying to get appointments or after-hours information.