Item | SS 2 | SS 4 | ||||
---|---|---|---|---|---|---|
AR | CP | Max.err | AR | CP | Max.err | |
1 | 0.35 | 0.48 | 0.52 | 0.4 | 0.60 | 0.60 |
2 | 0.45 | 0.39 | 0.61 | 0.6 | 0.47 | 0.53 |
3 | 0.7 | 0.75 | 0.75 | 0.85 | 0.90 | 0.90 |
4 | 0.5 | 0.35 | 0.65 | 0.65 | 0.43 | 0.57 |
5 | 0.5 | 0.40 | 0.60 | 0.4 | 0.51 | 0.51 |
6 | 0.35 | 0.48 | 0.52 | 0.4 | 0.62 | 0.62 |
7 | 0.5 | 0.43 | 0.57 | 0.7 | 0.53 | 0.53 |
8 | 0.7 | 0.75 | 0.75 | 0.8 | 0.87 | 0.87 |
9 | 0.2 | 0.23 | 0.77 | 0.3 | 0.24 | 0.76 |
10 | 0.4 | 0.28 | 0.72 | 0.5 | 0.29 | 0.71 |
11 | 0.5 | 0.35 | 0.65 | 0.8 | 0.41 | 0.59 |
12 | 0.5 | 0.21 | 0.79 | 0.6 | 0.21 | 0.79 |
13 | 0.45 | 0.53 | 0.53 | 0.6 | 0.61 | 0.61 |
14 | 0.5 | 0.44 | 0.56 | 0.5 | 0.54 | 0.54 |
15 | 0.4 | 0.27 | 0.73 | 0.5 | 0.28 | 0.72 |
16 | 0.6 | 0.73 | 0.73 | 0.5 | 0.85 | 0.85 |
17 | 0.5 | 0.33 | 0.67 | 0.8 | 0.38 | 0.62 |
18 | 0.3 | 0.43 | 0.57 | 0.3 | 0.52 | 0.52 |
19 | 0.35 | 0.39 | 0.61 | 0.6 | 0.49 | 0.51 |
20 | 0.4 | 0.36 | 0.64 | 0.5 | 0.41 | 0.59 |
Note: SS=standard setter; AR=Original Angoff rating; CP=Conditional Probability. Max.err=The maximum absolute value of the error of specification.
Int J Med Educ. 2023; 14:123-130; doi: 10.5116/ijme.64ed.e296