Table 3. Comparison of K1/K2 type questions’ distribution and the measured item difficulty between new and the old curricula students’ performance in the MCQs
Curriculum n* Measured Item Difficulty **p-value
K1-Items K2-Items
n* Mean ± SD n* Mean ± SD
Old 220 144 0.68 ± 0.24 76 0.56 ± 0.26 0.001
New 225 121 0.67 ± 0.26 104 0.64 ± 0.25 0.545
p-value     0.693   0.036  

*Number of MCQs; **Student’s t-test for independent samples

Int J Med Educ. 2016; 7:181-187; doi: 10.5116/ijme.5749.80f5