© 2008 American Public Health Association DOI: 10.2105/AJPH.2008.144584
The author is with Academic Edge, Inc, Bloomington, IN. Correspondence: Requests for reprints should be sent to Richard Goldsworthy, Academic Edge, Inc, 108 E 14th St, Bloomington, IN 47408 (e-mail: rick{at}academicedge.com). Mitchell's letter concerning our study raises an important public health issue related to prescription medication sharing that our study—focused as it was on direct effects on consumers—did not consider: the impact of such sharing on research and evaluation predicated upon prescription data sources. Mitchell is absolutely correct in asserting that there is considerable potential for consumer loaning and borrowing of prescription medication to affect the accuracy of traditional adverse effects reporting systems. We agree that efforts using these sources, whether for ongoing surveillance or as part of clinical trials, may need to take into consideration the potential underreporting of adverse effects that may be present when prescription medications are shared. Accepted for publication July 15, 2008.
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