Table 2. Average NBME scores by year and groups combined (post-hoc)
Variable   Intervention p value*
Pre Post
score of groups 1, 2, 3 N 75 72  
  Mean (SD) 75.7 (7.3) 80.0 (6.9) .001
score of groups 4, 5, 6 N 80 72  
  Mean (SD) 80.2 (6.6) 79.6 (6.3) .56

*p < 0.05, paired t-Test

 Int J Med Educ. 2023; 14:100-105; doi: 10.5116/ijme.64b4.f880