<p>SE = Standard error, Q1 = quartile 1, Q3 = quartile 3, ATV = atorvastatin, SMV = simvastatin, LOV = lovastatin, ITZ = itraconazole, CLA = clarithromycin, KTZ = ketoconazole, ERY = erythromycin.</p><p>Patients included in each type of co-medication patterns were not mutually exclusive.</p><p>The frequency and overlapping duration of co-medicated patients according to statin-contraindicated drug combination in 2009.</p