Table 1. Comparison of parametric demographic data of the first- and fourth-year cohorts
Variable M SD t df p d
Age     -6.76 135 <.001 1.13
  First-year 24.0 2.24        
  Fourth-year 26.4 2.00        
Teaching experience     -2.28 127.7 .025 .4
  First-year 9.68 10.87        
  Fourth-year 14.78 14.66        
Research experience     -1.03 129 .303 .18
  First-year 15.19 17.13        
  Fourth-year 18.62 20.0        
Int J Med Educ. 2016; 7:154-157; doi: 10.5116/ijme.571b.af3d