Key results
There was a statistically significant difference only in compression depth between these 2 groups, although we expected a much higher success rate in the CC3 group after 2 semesters of our CC teaching.The success rate of maintaining 3 out of the 4 CPR components correctly was higher in the CC3 students than in the CC1 students (28% versus 13%); however, there were no significant differences in maintaining 4, 2, 1, or 0 components correctly. The proportions of students performing individual CPR components correctly at the same time are seen in 