Item | SS 2 | SS 8 | ||||
---|---|---|---|---|---|---|
AR | CP | Max.err | AR | CP | Max.err | |
1 | 0.6 | 0.47 | 0.53 | 0.65 | 0.52 | 0.52 |
2 | 0.75 | 0.85 | 0.85 | 0.7 | 0.92 | 0.92 |
3 | 0.5 | 0.48 | 0.52 | 0.5 | 0.53 | 0.53 |
4 | 0.75 | 0.41 | 0.59 | 0.7 | 0.47 | 0.53 |
5 | 0.5 | 0.54 | 0.54 | 0.5 | 0.60 | 0.60 |
6 | 0.45 | 0.50 | 0.50 | 0.55 | 0.62 | 0.62 |
7 | 0.5 | 0.47 | 0.53 | 0.6 | 0.53 | 0.53 |
8 | 0.6 | 0.35 | 0.65 | 0.7 | 0.42 | 0.58 |
9 | 0.6 | 0.55 | 0.55 | 0.55 | 0.61 | 0.61 |
10 | 0.6 | 0.59 | 0.59 | 0.5 | 0.68 | 0.68 |
11 | 0.6 | 0.64 | 0.64 | 0.45 | 0.71 | 0.71 |
12 | 0.7 | 0.58 | 0.58 | 0.7 | 0.66 | 0.66 |
13 | 0.75 | 0.83 | 0.83 | 0.8 | 0.91 | 0.91 |
14 | 0.8 | 0.31 | 0.69 | 0.75 | 0.36 | 0.64 |
15 | 0.4 | 0.58 | 0.58 | 0.55 | 0.70 | 0.70 |
16 | 0.6 | 0.35 | 0.65 | 0.65 | 0.42 | 0.58 |
17 | 0.6 | 0.58 | 0.58 | 0.7 | 0.65 | 0.65 |
18 | 0.5 | 0.55 | 0.55 | 0.6 | 0.65 | 0.65 |
19 | 0.4 | 0.53 | 0.53 | 0.4 | 0.59 | 0.59 |
20 | 0.4 | 0.54 | 0.54 | 0.45 | 0.59 | 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