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Table 1 Comparison of verbal feedback against video feedback in a CPR scenario

From: Does video feedback analysis improve CPR performance in phase 5 medical students?

Variable Cohort A Cohort B
Mean improvement in total scorea 4 12
Range of total scores in the return sessiona 68–84 65–88
Largest increase in total score for a single groupa 30 47
Number of groups improving overall score between sessions 14 21
Number of groups achieving a lower score at the return session 9 3
  1. aMaximum overall score = 90