A new review in the Journal of the American Medical Association found that America spends about twice as much as other high-income countries on healthcare.

At the same time, the health outcomes, or how well people fare with their health, aren't any better and are often worse than countries that spend half as much on healthcare as the US does.

The study's authors concluded that the main reason the US spends so much has to do with the prices of labor, goods (like pharmaceuticals), and administrative costs — not how often Americans get certain procedures, which was no more than any other country.

The US healthcare system has seen a lot of changes in the past decade, from the introduction of the Affordable Care Act, to attempts to dismantle it, to criticism of high prices.

Through all of that, policymakers and the public have been trying to determine why the US spends so much on healthcare.

In a review published in March in the Journal of the American Medical Association, researchers at the Harvard T. H. Chan School of Public Health, the Harvard Global Health Institute, and the London School of Economics and Political Science, found that the US spent about twice as much on healthcare as other other high-income countries.

At the same time, outcomes were no better and healthcare wasn't used any more frequently than the other countries.

The researchers found that what's different, as far as US healthcare spending goes, is what the country spends on labor, goods like prescription drugs, and administrative costs.

"As patients, physicians, policy makers, and legislators actively debate the future of the US health system, data such as these are needed to inform policy decisions," the researchers concluded.

The review compared up US healthcare against the United Kingdom, Canada, Germany, Australia, Japan, Sweden, France, Denmark, the Netherlands, and Switzerland. Here's how the country stacked up.