Making people pay more of their health care bill out of pocket does not make them smarter shoppers, according to a new study published in Health Affairs, which corroborates earlier research.

The big picture: Part of the idea behind those ever-increasing insurance deductibles is that patients who have to put more of their own money on the line will become better consumers, comparison-shopping for the highest-quality, lowest-cost services. But it doesn't seem to work that way in the real world.

What they're saying: In the Health Affairs survey of people with high-deductible plans …

  • Just 25% had talked to their provider about how much something would cost.
  • 14% had compared prices at multiple facilities.
  • 14% had compared quality metrics for multiple facilities.
  • 7% had tried to negotiate a price.

Between the lines: People don't do these things because they don't even think of it, or assume it won't work. Or, to borrow some truly glorious academic-speak: "Perceptions of futility were common impediments to engagement."

  • A separate study, also published in Health Affairs, did find one effect of high deductibles: They seem to make women more likely to delay treatment for breast cancer.

Yes, but: There's some evidence that if patients try to avail themselves of comparison-shopping tools, they can achieve real savings, at least for MRIs and other imaging procedures.

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