Skip to main content

Table 3 New distribution of the difficulty level of the questions for both groups

From: The Sandwich principle: assessing the didactic effect in lectures on “cleft lips and palates”

  Difficulty level Sandwich lecture
Number of questions
Classical lecture
Number of questions
Easy >  0.8–1 12 7
Upper test optimum 0.8–0.6 10 5
Lower test optimum 0.5–0.4 8 12
Difficult < 0.4 10 16