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Table 3 Variation of the Kappa index by community health worker (CHW) using different numbers of items for comparison

From: Reliability of information on people with disabilities gathered by community health workers in highly consanguineous communities of Northeastern Brazil

CHW Items Kappa Items Kappa Items (n) Kappa p
1.01.1-3 25 0.926 40 0.825 65 0.86 <0.01
1.02.1-6 24 1.000 49 0.85 143 0.83 <0.01
1.03.1-2 27 0.939 53 0.938 53 0.94 <0.01
1.04.1-8 23 0.723 47 0.737 200 0.78 <0.01
1.05.1-2 20 0.613 41 0.748 41 0.75 <0.01
1.06.1-2 22 0.878 42 0.82 42 0.82 <0.01
1.07.1-2 26 1.000 52 0.961 52 0.96 <0.01
1.08.1-3 26 1.000 53 0.935 79 0.95 <0.01
1.09.1-6 21 0.915 43 0.599 83 0.76 <0.01
1.10.1-4 25 1.000 52 0.829 104 0.90 <0.01
2.12.1-2 28 0.675 51 0.821 51 0.82 <0.01
2.13.1 23 1.000 23 1 23 1.00 <0.01
2.14.1-3 24 0.866 53 0.778 81 0.74 <0.01
2.15.1 28 0.861 28 0.861 28 0.86 <0.01
2.16.1-3 26 0.744 50 0.788 77 0.82 <0.01
2.17.1-2 28 0.743 54 0.834 54 0.83 <0.01
2.18.1-2 23 0.739 50 0.762 50 0.76 <0.01
2.19.1-3 17 0.655 44 0.526 68 0.55 <0.01
2.20.1-2 27 0.605 55 0.668 55 0.67 <0.01
2.21.1-3 26 1.000 35 0.89 61 0.84 <0.01
2.22.1-7 26 1.000 49 1 164 0.87 <0.01
2.23.1-2 27 0.926 53 0.844 53 0.84 <0.01
2.24.1-5 24 0.860 47 0.732 124 0.78 <0.01
2.25.1 24 0.593 24 0.593 24 0.59 <0.01
2.26.1-6 26 0.737 51 0.786 156 0.85 <0.01
2.27.1-7 27 1.000 55 0.87 180 0.92 <0.01
2.28.1 24 0.925 24 0.925 24 0.93 <0.01
2.29.1-4 26 1.000 45 0.753 94 0.83 <0.01
2.30.1-4 27 0.773 52 0.779 98 0.79 <0.01
2.31.1-3 24 0.919 48 0.878 73 0.89 <0.01
2.32.1-2 20 0.762 37 0.775 37 0.78 <0.01
2.33.1-2 28 0.874 56 0.906 56 0.91 <0.01
2.34.1-2 23 1.000 46 0.796 46 0.80 <0.01
Kappa Total (2.969)     2.589 0.808 0