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Table 2 EBM test scores by postgraduate level

From: Evidence-based medicine training during residency: a randomized controlled trial of efficacy

  PGY-1 PGY-2 PGY-3
  Mean SD n Mean SD n Change over PGY-1 Mean SD n Change over PGY-1*
Workshop 13.65 3.88 23 15.52 3.95 23 1.87 17.09 3.89 22 3.00
Control 15.28 3.22 25 16.16 3.20 25 0.88 18.00 3.87 22 2.59
Combined Groups 14.50 3.61 48 15.85 3.55 48 1.35 17.55 3.86 44 2.80
  1. *Calculated among residents participating at both time points; does not equal the difference of the means presented in the table due to participant attrition.