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. 2015 Jul 28;76(4):609–637. doi: 10.1177/0013164415596420

Table B2.

Computing Subject-Level Agreement Coefficients κG|i Between Raters 1 and 2 Based on the AC1 Coefficient.

(1πk)[εik(1)+εik(2)]/[2(q1)]
Subject (i) pa|i k=1 k=2 k=3 pe|i a κG|i(1,2) b κG|i(1,2) c
1 1 0.1833 0 0 0.1833 1 1.0406
2 1 0.1833 0 0 0.1833 1 1.0406
3 1 0.1833 0 0 0.1833 1 1.0406
4 1 0.1833 0 0 0.1833 1 1.0406
5 1 0 0 0.4 0.4 1 0.9335
6 1 0.1833 0 0 0.1833 1 1.0406
7 1 0.1833 0 0 0.1833 1 1.0406
8 1 0.1833 0 0 0.1833 1 1.0406
9 1 0.1833 0 0 0.1833 1 1.0406
10 1 0 0.4167 0 0.4167 1 0.9253
11 1 0.1833 0 0 0.1833 1 1.0406
12 0 0 0.2083 0.2 0.4083 –0.3616 –0.4322
13 1 0 0.4167 0 0.4167 1 0.9253
14 1 0 0 0.4 0.4 1 0.9335
15 0 0.0917 0 0.2 0.2917 –0.3616 –0.3745
pa pe κ^G κ^G
Average 0.867 0.266 0.818 0.818
a

This is obtained by summing columns 3, 4, and 5. bThis is computed as (pa|ipe)/pe (i.e., Col 7 = (Col2 − 0.266)/(1 − 0.266)). cThis is computed based on Equation (16): Col8 = Col7 − 2×(1 − 0.818)×(Col6 − 0.266)/(1 − 0.266)