Highlights ■ All variables that affect the quality of cardiopulmonary resuscitation were analyzed. ■ In addition to performance, we analyzed participants’ confidence. ■ This study considered the cost of training using the traditional methodology versus feedback. ABSTRACT Objective: To analyze cardiopulmonary resuscitation skill acquisition and retention at 3 and 6-month intervals and determine the optimal training frequency and associated costs. Methods: Fifth and sixth-year medical students practiced cardiopulmonary resuscitation using a feedback-equipped simulator. Results: The study included 43 students. Training […]