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Medicare Part D associated with reduction in nondrug medical spending

Date:
July 26, 2011
Source:
JAMA and Archives Journals
Summary:
Among elderly Medicare beneficiaries with limited prior drug coverage, implementation of Medicare Part D was associated with significant reductions in nondrug medical spending, such as for inpatient and skilled nursing facility care, according to a new study.

Among elderly Medicare beneficiaries with limited prior drug coverage, implementation of Medicare Part D was associated with significant reductions in nondrug medical spending, such as for inpatient and skilled nursing facility care, according to a study in the July 27 issue of JAMA.

"Implementation of the Medicare prescription drug benefit (Part D) in January 2006 was followed by increased medication use, reduced out-of-pocket costs, and improved adherence to essential medications for elderly persons. The effects of Part D on nondrug medical spending for Medicare beneficiaries have not been clearly defined," according to background information in the article.

J. Michael McWilliams, M.D., Ph.D., of Harvard Medical School and Brigham and Women's Hospital, Boston, and colleagues compared nondrug medical spending for traditional Medicare beneficiaries before and after the implementation of Part D. Nationally representative survey data and linked Medicare claims from 2004-2007 were used to compare nondrug medical spending before and after the implementation of Part D by self-reported generosity of prescription drug coverage (extent to which medications were mostly or completely covered) before 2006. Participants included 6,001 elderly Medicare beneficiaries from the Health and Retirement Study, including 2,538 with generous and 3,463 with limited drug coverage before 2006.

Adjusted total nondrug medical spending before implementation of Part D was consistently but not significantly higher for participants with limited drug coverage than for participants with generous drug coverage (7.6 percent relative difference). The researchers found that nondrug medical spending after Part D implementation was 3.9 percent lower for participants with limited prior drug coverage than for those with generous prior drug coverage, which was a significant differential [the difference between observed and expected spending] reduction (-10.6 percent). "This differential reduction in relative terms corresponded to an average absolute difference of -$306/quarter between observed and expected spending for participants with limited prior drug coverage," the authors write.

This reduction was explained mostly by differential changes in spending on Part A inpatient and skilled nursing facility institutional services (-$204/ quarter). "Part D implementation was also associated with small differential reductions in spending on Part B physician and ancillary services for participants with limited prior drug coverage (-$67/quarter). These differential reductions in spending on Part B services were not associated with differential changes in outpatient visits (-0.06 visits/quarter) and were thus likely attributable to reduced use of inpatient rather than outpatient physician services."

The researchers add that nondrug medical spending in the control group did not differentially change after January 1, 2004, for beneficiaries with limited prior drug coverage in 2002 ($14/quarter), relative to beneficiaries with generous prior coverage.

"In concert with previous studies, these findings suggest that increased medication use and adherence achieved through expanded drug coverage for seniors have been associated with decreased spending for non-drug medical care," the authors write.

"The economic and clinical benefits suggested by these reductions may be enhanced by further expansions in prescription drug coverage for seniors, improvements in benefit designs for drug-sensitive conditions, and policies that integrate Medicare payment and delivery systems across drug and nondrug services."


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. J. M. McWilliams, A. M. Zaslavsky, H. A. Huskamp. Implementation of Medicare Part D and Nondrug Medical Spending for Elderly Adults With Limited Prior Drug Coverage. JAMA: The Journal of the American Medical Association, 2011; 306 (4): 402 DOI: 10.1001/jama.2011.1026

Cite This Page:

JAMA and Archives Journals. "Medicare Part D associated with reduction in nondrug medical spending." ScienceDaily. ScienceDaily, 26 July 2011. <www.sciencedaily.com/releases/2011/07/110726163447.htm>.
JAMA and Archives Journals. (2011, July 26). Medicare Part D associated with reduction in nondrug medical spending. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2011/07/110726163447.htm
JAMA and Archives Journals. "Medicare Part D associated with reduction in nondrug medical spending." ScienceDaily. www.sciencedaily.com/releases/2011/07/110726163447.htm (accessed August 20, 2014).

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