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Table 4 Item analysis (facility and quality) for clinical problem solving and situational judgement test. In addition to item analysis for the radiology shortlisting sample, item analysis for the GP/CMT population is also shown

From: Evaluation of two selection tests for recruitment into radiology specialty training

 

Clinical Problem Solving

   

Situational Judgement Test

   
 

Item facility n (n) a,b

Item facility n (n) a,b

 

Easy

Moderate

Hard

Total

Easy

Moderate

Hard

Total

Item qualityc

Good

11 (22)

10 (11)

5 (5)

26 (38)

5 (13)

16 (15)

3 (1)

24 (29)

Moderate

3 (19)

9 (12)

7 (7)

19 (38)

10 (11)

7 (4)

0 (1)

17 (16)

Weak

24 (8)

16 (8)

9 (2)

49 (18)

8 (4)

0 (1)

1 (0)

9 (5)

Total

38 (49)

35 (31)

21 (14)

94

23 (28)

23 (20)

4 (2)

50

  1. aThe data refer to item number for the radiology shortlisting sample and, in parentheses, the GP/CMT population
  2. bItem facility is the proportion of candidates answering the item correctly (easy ≥ 0.8; moderate = 0.6 - 0.79; hard: < 0.6)
  3. cItem quality is determined by the correlation of the item with the overall test score (good ≥ 0.25; moderate = 0.18 - 0.24; weak < 0.18)