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Table 2 Change in scores for verbal feedback and video feedback from session one to session two

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

Variable Mean change in score Cohort B more effective than cohort A Improvement in cohort B scores between sessions
Cohort A Cohort B p value 95 % CIa p value 95 % CIa
Total scoreb 4 12 .006 2.8, 15.8 < .001 6.3, 15.8
Global scorec 1.8 2.5 < .001 1.8, 6.0 < .001 3.3, 7.2
Auscultationd 0.8 2.0 .087 −0.2, 3.6 .384 −0.7, 1.9
Compression depthd 0.8 0.3 .312 −1.1, 3.3 § §
iVentilation qualityd −1.0 0.3 .002 1.2, 5.0 .124 −0.3, 2.3
Drug administration timingd 0.6 1.8 .059 −0.7, 4.1 .004 0.7, 4.1
  1. aCI = Confidence intervals; bMaximum score = 90; cMaximum score = 10; dMaximum score = 4
  2. § Analysis not possible due to the ordinal model on compression depth failing to provide reliable estimates - no student pre-feedback attains a score of 2 and no student post-feedback attains a score of 0, creating issues with the modelling process