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Universal Coverage May Narrow Racial, Ethnic And Socioeconomic Gaps In Health Care

Date:
April 20, 2009
Source:
Harvard Medical School
Summary:
A study examining health data for more than 6,000 adults over an eight-year period found that disparities in important health outcomes by race, ethnicity and education were substantially reduced after these adults gained universal health coverage through the Medicare program.

Health care disparities in the U.S. have long been noted, with particular attention paid to the gaps separating racial and economic groups. And while some research has looked at how insurance—and lack of insurance—contributes to this imbalance, few, if any, studies have quantified the impact of universal coverage on differences in health outcomes between these groups.

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Now, by analyzing survey data describing measures of blood pressure, cholesterol and blood sugar collected between 1999 and 2006 from the National Health and Nutrition Examination Survey (NHANES), a team of researchers in Harvard Medical School's department of health care policy has compared the health outcomes of individuals by race, ethnicity and education. What's more, the researchers studied whether overall discrepancies between these demographic groups were narrowed among adults with Medicare coverage after age 65.

Looking at data for more than 6,000 individuals between the ages of 40 and 85, researchers probed important indicators of disease control for hypertension, diabetes and coronary heart disease. They found that while health indicators improved for all groups between 1999 and 2006, the socio-demographic gaps remained unchanged or, in some cases, widened. However, among individuals age 65 and older who were eligible for Medicare, a U.S. government-administered social insurance program, the gaps narrowed substantially.

These findings are reported in the April 21 issue of the Annals of Internal Medicine and are funded by The Commonwealth Fund, a private foundation supporting independent research on health policy reform and a high performance health system.

"The tide is rising and it is lifting all boats, but many are still left behind," says lead author J. Michael McWilliams, HMS assistant professor of health care policy and an associate physician in the Division of General Medicine at Brigham and Women's Hospital. "In addition to current quality improvement efforts, we will likely need universal coverage to achieve good control for all adults with these conditions."

The researchers noted that controlling blood pressure, cholesterol and blood sugar are critical steps to preventing devastating complications of cardiovascular disease and diabetes, such as heart attacks, strokes, kidney disease and premature death. These disease control measures were provided by NHANES, a research program of the National Center for Health Statistics, where clinicians travel to all regions of the United States to examine and provide on-the-spot health evaluations for individuals. All data from this program are publicly available.

The researchers discovered a number of examples where racial, ethnic and socioeconomic gaps closed once individuals were eligible for Medicare. For example:

  • For systolic blood pressure, racial disparities decreased by 60 percent
  • For diabetes risk factors, educational disparities decreased by 83 percent, whileracial and ethnic disparities fell by 78 percent
  • For total cholesterol levels, educational disparities disappeared altogether

"We found some important indicators that universal health insurance may reduce persistent disparities we've seen for far too long in Americans from different racial or ethnic groups," says senior author John Ayanian, professor of medicine and health care policy at Harvard Medical School and Brigham and Women's Hospital and a professor of health policy and management at the Harvard School of Public Health.

"The results of this study make it clear that guaranteeing access to affordable insurance for all Americans is the essential first step toward a high performing health care system and a healthier America," said Commonwealth Fund President Karen Davis. "As our leaders look toward health reform it is critical that they take into account the value of health care coverage for everyone and assure that all Americans have the ability to obtain insurance for themselves and their families."


Story Source:

The above story is based on materials provided by Harvard Medical School. Note: Materials may be edited for content and length.


Cite This Page:

Harvard Medical School. "Universal Coverage May Narrow Racial, Ethnic And Socioeconomic Gaps In Health Care." ScienceDaily. ScienceDaily, 20 April 2009. <www.sciencedaily.com/releases/2009/04/090420182205.htm>.
Harvard Medical School. (2009, April 20). Universal Coverage May Narrow Racial, Ethnic And Socioeconomic Gaps In Health Care. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2009/04/090420182205.htm
Harvard Medical School. "Universal Coverage May Narrow Racial, Ethnic And Socioeconomic Gaps In Health Care." ScienceDaily. www.sciencedaily.com/releases/2009/04/090420182205.htm (accessed November 24, 2014).

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