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Table 1 Differences in Pretests and Posttests for Second Year (N = 101) and First Year (N = 53) Students

From: Learning outcomes from a biomedical research course for second year osteopathic medical students

   Pretest
Mean
Posttest
Mean
Mean Change P value*
Percent Correct of 20 Second Year 27.4% 39.9% 12.5% < .001
  First Year 31.8% 27.4% -4.4%  
Number No Response of 20 Second Year 8.56 5.11 -3.46 < .001
  First Year 8.08 8.53 0.45  
Percent Correct of Attempted Second Year 47.5% 54.4% 6.8% .023
  First Year 51.3% 48.8% -2.5%  
  1. * t test for change in score between pretest and posttest