Asthma inhalers adopted more slowly for minority patients and children

Asthma inhalers adopted more slowly for minority patients and childrenDecember 23, 2005 Study analyzes how usage of new technology may contribute to health care disparities Inhaled steroid medications for asthma, which have greatly reduced the need for patients to be hospitalized with serious symptoms, were significantly less likely to be prescribed for minority patients and children during the years soon after their introduction. In the January 2006 issue of the journal Medical Care, investigators from the Massachusetts General Hospital Institute for Health Policy report one of the first studies to examine how disparitites in health care change over time, reflecting how the introduction of a new technology differs among racial, ethnic or other groups.

"Previous studies of health care disparities have tended to look at one point in time, but a longer-term picture allows us to see whether disparities are a static or dynamic problem," says Timothy Ferris, MD, of the MGH Institute for Health Policy, the article's lead author. "Our results support the theory that disparities might be greater in the early stages after a technology is introduced and that attempts to reduce disparities might focus on this important period." In order to track the adoption of inhaled steroid medications for asthma after their introduction in the 1980s, the researchers analyzed data from the National Ambulatory Medical Care Survey from 1989 to 1998.

In this annual survey, conducted by the National Center for Health Statistics, physicians complete a form after outpatient visits during a randomly selected week, answering questions about patients' diagnoses and the treatments provided. The researchers identified 3,671 physician visits by patients with asthma during the years studied, determined whether or not inhaled steroids were prescribed or administered during those visits, and also analyzed information on patients' age and race or ethnicity.

During the first two years studied, minority patients were less than half as likely to receive inhaled steroid medications as were non-minority patients. While the overall difference in usage between minority and non-minority patients resolved by the mid-1990s, that change reflected increased usage only among African American patients; the low rate of prescription for Hispanic patients remained virtually unchanged. Children also were significantly less likely than adults to receive inhaled steroid medications throughout the years studied, although there was some increase in usage for the youngest children.

"Technology adoption in health care requires both the doctor to recommend a new agent and the patient to accept it. Many if not most of the steps in that process are not controlled by the patient," Ferris says. "Some factors behind these disparities might be the greater access non-minority patients usually have to specialists, who are more likely to use new technologies, and the higher cost of new medications, which makes them less accessible to the poor and underinsured.

Children often do not get access to new technologies because drug manufacturers may not invest in the trials required to demonstrate safety and effectiveness in children. When you put these factors together, it appears that the minority children were the last to benefit from this effective medication." The researchers also note that there is no way of knowing the correct usage rate for these medications among the various groups. For example, while usage differences between white and black patients seemed to disappear, black patients might still be undertreated, since asthma is more common and often more serious among African Americans. Further studies of factors underlying these and other disparities are being conducted by the Disparities Solutions Center in the MGH Institute for Health Policy. Massachusetts General Hospital





 

 

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