“…Thus, we still need to identify factors that may explain why patients do not take their medications. Jin, Sklar, Min Sen Oh, & Chuen, 2008;Hertz, Unger, & Lustik, 2005;Yu, Nicol, Yu, & Ahn, 2005;Obisesan, Vargas, & Gillum, 2000;Yanos, 2001;Sherman et al, 2009;Billups, Malone, & Carter, 2000;Schmittdiel et al, 2009). For the Part D population, current studies assessing the effect of Part D on medication compliance have typically focused on patient OOP costs (Schmittdiel et al, 2009 Our primary research objective was to assess non-compliance among Medicare Part D recipients for eight therapeutic classes of cardiovascular medication classes: antianginals, antihypertensives, antiarrhythmics, antihyperlipidemics, beta blockers, calcium channel blockers, cardiotonics, and diuretics.…”