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Table 1 Outline of dataset; number of students and items included

From: Is a picture worth a thousand words: an analysis of the difficulty and discrimination parameters of illustrated vs. text-alone vignettes in histology multiple choice questions

 

n = students sitting paper

Number of items (MCQs) per paper

Text alone (TA)

Illustrated text (IT)

Total (TA + IT)

January 2009a

279

15

19

34

May 2009b

277

17

16

33

January 2010

316

10

20

30

May 2010a

315

17

17

34

January 2011a

347

14

15

29

May 2011

342

22

13

35

Total

 

95

100

195

  1. aone item excluded due to duplication
  2. btwo items excluded due to duplication