Risk of 30-day hospital encounter with ventricular arrhythmia Risk of 30-day hospital encounter with ventricular arrhythmia* associated with use of a macrolide antibiotic (azithromycin, clarithromycin or erythromycin) examined in subgroups defined by chronic kidney disease, congestive heart failure, coronary artery di... Risk of 30-day hospital encounter with ventricular arrhythmia* associated with use of a macrolide antibiotic (azithromycin, clarithromycin or erythromycin) examined in subgroups defined by chronic kidney disease, congestive heart failure, coronary artery disease and use of a QT-prolonging drug. Data marker size is proportional to the inverse of the source variance. *Based on hospital presentation (emergency department visit or hospital admission) assessed by hospital diagnosis codes. Note: CI = confidence interval, RR = relative risk. Mai H. Trac et al. CMAJ 2016;188:E120-E129 ©2016 by Canadian Medical Association