• Meaghan St Charles, Christopher M Blanchette, Harris Silver, Danielle Lavallee, Anand A Dalal, and Douglas Mapel.
• Lovelace Respiratory Research Institute, Kannapolis, North Carolina 28081, USA. cblanchette@LRRI.org
• Curr Med Res Opin. 2010 Oct 1; 26 (10): 2421-9.

ObjectiveWhile several studies have examined adherence to controller medications for the treatment of COPD, few systematic reviews have taken the translational step to identifying important and necessary areas for further research. The objective of this study was to review data on the outcomes of adherence to various controller therapies in patients with COPD in an effort to help prescribers understand adherence properties for each therapy.Research Design And MethodsThis is a systematic review of studies investigating adherence to an array of controller pharmaceutical regimens. The studies were obtained from PubMed during 2008 and 2009 using the following key words: chronic obstructive pulmonary disease, COPD, adherence, controller medication, and persistence. Only articles encompassing adherence or persistence data to controller medications and published after 1990 were utilized.ResultsAfter the search results were filtered for only the articles that pertained to adherence or persistence measurements in COPD, 35 articles remained; and finally, discounting those articles not published in English, articles which did not compare treatments for COPD, as well as those which were review articles, ten applicable articles remained. Each of these found low levels of medication adherence and/or persistence among patients receiving medications for COPD. Patients receiving fluticasone/salmeterol (FSC) and tiotropium (TIO) for treatment showed the highest adherence among all controller medications. Patients who were married, older, and white were more likely to adhere to their medications.ConclusionCharacteristics of the medication used (i.e. dosing schedule, formulation, etc.) as well as patient characteristics affect the adherence/persistence to medications for the treatment of COPD. Further patient education is necessary in order to effectively improve disease management and patient outcomes in COPD. There is a need for future research and educational efforts to improve adherence in COPD and more clearly identify specific behavioral and treatment characteristics associated with specific COPD medications that can facilitate adherence.

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