Cardiac rehabilitation (CR) participation results in significant health benefits. However, there is wide variation in program duration, and little is known about the optimal duration of CR for patient outcomes. The objective of this study was to compare quality of life (QoL) of patients who participated in CR programs of??0.0001), and PTGI (P?=?0.007) were significantly greater regardless of CR duration when compared to those who did not attend CR. There were no significant differences in outcomes when comparing patients attending CR programs of?