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The health care that doctors provide to Medicaid patients and the uninsured through the so-called safety-net system is no different from the care delivered to privately insured patients in terms of appointment length and treatments offered, both of which are key measures of health care quality, according to a new study published Monday in the journal Health Affairs.
One of the thorniest debates surrounding the Obama administration's Affordable Care Act is whether individual states should accept federal funding to expand Medicaid programs, in order to cover a greater swath of uninsured people who weren't previously considered poor enough to qualify for Medicaid but who still couldn't afford to buy insurance on their own.
And those who oppose Medicaid expansion, such as Louisiana Gov. Bobby Jindal, argue that costs will eventually be shifted to state taxpayers, or claim that patients on Medicaid receive substandard medical care, citing a 2010 University of Virginia study which found that Medicaid patients were more likely to die in surgeries than those who were uninsured or insured privately.
But the new study conducted by George Washington University's School of Public Health and Health Services could potentially lend credence to the states that have opted to expand Medicaid coverage.
That's because the researchers found "no meaningful difference" between the quality of care doctors gave patients who were privately insured and the quality of care received by the uninsured, Medicaid patients and those who were treated at community health centers, which primarily cater to the poor and uninsured.
"The findings refute the belief that primary care doctors deliver less care to the nation's poor," said lead author Brian K. Bruen, a research scientist at GWU's School of Public Health and lead author of the study.
Bruen and his team examined data gathered by the National Center for Health Statistics from more than 31,000 visits to primary care doctors by patients under the age of 65 between the years 2006 and 2010. They looked at how long doctors spent with each patient, the types of treatments provided and whether doctors offered patients preventive health counseling about topics like smoking or obesity. They statistically accounted for age, gender, race and reason for visit.
What they found surprised them. Studies have shown that patients are more satisfied with their health care and are more likely to adhere to treatment plans when their doctors spend more time on visits. And in this study, doctors spent the same amount of time — an average of 18.5 minutes — treating patients who were uninsured or on Medicaid as they did with patients who had private health insurance.
Whether or not the care took place at a community health center or a private doctor's office didn't affect visit length, either.
The researchers found that doctors did spend an average of four minutes longer on new patients or those with more severe health problems.
The American Medical Association's code of ethics calls for doctors to treat their patients according to their medical needs, no matter their insurance or socioeconomic status. But because Medicaid generally reimburses doctors at significantly lower payment rates than do other insurers, "we were a little skeptical that if you're being paid less or you're under pressure for other reasons...that patients might actually be short-changed a bit," Bruen said in a telephone interview. "But it turned out that that question in our minds was not true."
In addition, the researchers found that, among 39 possible diagnostic treatments like screening for blood pressure or depression, Medicaid patients were given slightly more treatments, and uninsured patients received slightly fewer treatments, than privately insured patients, but those differences were small, Bruen said. There were no differences in patients' likelihood of receiving preventive counseling.
Dr. Jennifer DeVoe, whose research at Oregon Health and Science University focuses on health care in low-income settings, says the GWU study corroborates her own team's findings in the state of Oregon. She found that low-income parents were similarly satisfied with the public health care their children received as they were with privately-insured health care.
But DeVoe points out that safety-net health care providers face complex challenges in treating low-income patients, who are often much sicker due to issues including poverty, homelessness and limited education or employment. "We need to do a better job figuring out what we are measuring and how we are accounting for these different vulnerabilities," she said.
In fact, DeVoe thinks public health researchers should weight patients with a vulnerability score accounting for such differences, "kind of like a handicap score in golf," she said.
Bruen acknowledges that his study focuses solely on what happens to patients once they've received medical care through the safety-net providers; it doesn't look at whether increased demand for care through the ACA's expansion of Medicaid will affect patients' ability to secure doctor appointments or change the quality of care.
"In the grand scheme of things, it is a bit myth-busting," Bruen said of ths study. But in terms of the Affordable Care Act and Medicaid expansion, "it's just one little piece of a much bigger picture, which will continue to evolve as we get into 2014 and beyond."
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