Will ‘Most Important Study in Decades’ Matter for Reform?

Will ‘Most Important Study in Decades’ Matter for Reform?

Although Medicaid is set to be the backbone of the Affordable Care Act's health coverage expansion, the program is beset by criticism from conservatives. Health policy experts hope that a once-in-a-generation study will strengthen the case for preserving the program.

In battles over policy, research studies can begin to feel like common swords in a medieval armory — they’re repeatedly plucked by policymakers seeking to puncture their opponents, then abandoned when the prize is claimed (or the study’s own point has been worn away in the struggle).

But every few decades, a singular study appears like a gift from the gods, slicing through hardened opposition like a hot knife through butter.

If seeking weapons — whether mythological or empirical — perhaps academics should search by bodies of water. King Arthur reportedly pulled his Excalibur from a lake in Wales. Health researchers — or at least those trying to defend Medicaid — may have found their own magical sword near Lake Oswego.

Oregon’s Groundbreaking Medicaid Study

Three years ago, lawmakers in Oregon announced they would expand Medicaid coverage. Ninety thousand uninsured residents applied, but the state could only afford to enroll 10,000. As a result, Oregon set up a lottery to determine who would be added to the program.

A pair of prominent health policy researchers — Harvard University’s Katherine Baicker and the Massachusetts Institute of Technology’s Amy Finkelstein — stumbled across the lottery and realized it was “an unbelievable opportunity” to test the benefits of expanding public health insurance, Baicker told the New York Times. While the lottery was sure to frustrate 80,000 Oregonians, it also created the perfect structure for a randomized controlled trial, perhaps the most rigorous of academic studies, where one group of individuals receive certain benefits and a nearly identical group is denied them.

The results of Baicker and Finkelstein’s research — published last week by the National Bureau of Economic Research — revealed a fairly unsurprising finding: health insurance offers tangible health and financial benefits. Specifically, Medicaid beneficiaries in Oregon felt better, found regular physicians and were better able to maintain financial stability compared with low-income, uninsured people.

The study has been roundly heralded, as much for its results as for its construction. In a comment on The Incidental Economist, researcher and physician Aaron Carroll wrote that the study will “be cited for decades. No other study has been able to examine the effect of receiving insurance on health in a randomized contex[t] and, to boot, on such a policy-relevant population. … [T]his paper towers above.” The Washington Post‘s Ezra Klein termed it “the most important health-policy study” in a generation.

According to University of Chicago professor Harold Pollack, the study also demonstrates how hard it is — and illustrates the serendipity of Oregon’s circumstances — to conduct truly randomized trials in health care.

Medicaid Under Fire

The study reinforces the benefits of Medicaid as the program takes blows on several fronts. A national deficit deal could slice federal funding. Medi-Cal — California’s program — is at the center of a debate on whether states can scale back provider reimbursement. Some conservatives also have advanced arguments that Medicaid is worse than no insurance at all.

Most acutely, the program is at the heart of the federal health reform law. More than 16 million uninsured Americans are slated to be added to its rolls by 2019, including more than two million Californians — making Medicaid a key battleground for policy wonks and politicos.

“Medicaid coverage looks much better on paper than it does in reality,” Douglas Holtz-Eakin, president of the American Action Forum, wrote earlier this year. Citing low reimbursement rates, barriers to patient access and the rising financial burden on the states, Holtz-Eakin warned that “without substantial Medicaid reform, Obamacare will result in a human and fiscal disaster.”

Research That Moved Mountains

So will this new Medicaid study change the course of conversation?

“Studies have influence, but they never speak for themselves … they have to line up with a particular moment in the political debate,” Pollack told California Healthline. Only a handful of studies directly shift policy — and even then, their influence may fade with the political season.

California Healthline quizzed policy wonks on the most influential health research in recent decades. While experts nominated a range of reports — how the Institute of Medicine’s “Crossing the Quality Chasm” drove patient safety improvement or Dana Goldman’s work on prescription drug benefits affected Medicare Part D — two studies came up again and again.

First, the RAND Health Insurance Experiment — a 15-year project to track price elasticity in health care– has shaped the industry’s view of patient cost sharing for more than two decades. The RAND Corporation terms the project as “the most important health insurance study ever conducted,” and few researchers would disagree. In 2006, economist Jonathan Gruber concluded that the randomized study remains “the gold standard” for evaluating how patient income and copayments affect utilization and health.

Meanwhile, the Dartmouth Atlas has uncovered variations in health costs and quality that clearly influenced this White House’s approach to reform; CMS Administrator Donald Berwick has called the atlas “the most important research of its kind in the last quarter-century.” Notably, the Affordable Care Act sets up pilot projects that map to the atlas’ conclusion that the best providers should be among the least expensive.

This Study’s Impact

Yet even in the RAND and Dartmouth cases, it’s tough to directly link research and eventual legislation. In fact, some of the most important studies for actual health policy — such as those offering technical assistance for implementing new programs or ideas for reforming entitlement programs — are state-specific projects that don’t enter the public literature.

In the short term, the NBER study’s most obvious effect may be to quiet Medicaid’s critics, although some have pushed back against its findings. Michael Cannon, director of health policy studies at the Cato Institute, argues that while “supporters of President Obama’s health-care law may tout” the report’s findings, it “does not provide the vindication they seek,” given lack of mortality data and only modest improvements in health and financial security.

The study might not have immediate implications for the Golden State, either. A California HealthCare Foundation research brief notes that “extrapolating the results of this small Medicaid expansion in Oregon to the very large expansion of Medicaid in California expected under health reform comes with important caveats.” For example, there are significant differences between Oregon and California’s demographics and Medicaid reimbursement. (CHCF publishes California Healthline.)

State officials across the nation also are focused on “the best ways to maximize the benefits of [Medicaid] and minimize its costs,” and the NBER study doesn’t really address those issues, according to Christopher Perrone, deputy director of CHCF’s Health Reform & Public Programs Initiative.

But in advocates’ fight for the flawed but beneficial Medicaid program, this research could be the rallying point to ultimately gather a storm of swords — the first in a series of new papers that shift thinking about public insurance programs.

The NBER study may have captivated the policy world this week, but there’s plenty of other news shaping health reform. Here’s what else is making news around the nation.

Administration Happenings

On the Hill

Inside the Industry

In the States

In the Courts

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