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Table 3 Means (standard deviations in parentheses) for each group on the primary and secondary outcome measures of post-intervention written z-score corrected for pre-intervention written z-score and post-intervention OSCE z-score corrected for pre-intervention written z-score.

From: The effect of a brief social intervention on the examination results of UK medical students: a cluster randomised controlled trial

Ethnic group Condition Mean written z-score (SD) Mean OSCE z-score (SD) N
W Intervention 0.063 (0.90) 0.271 (0.96) 79
  Control 0.244 (1.00) -0.002 (0.96) 84
EM Intervention -0.098 (1.09) 0.001 (1.00) 95
  Control -0.175 (0.96) -0.286 (0.97) 77