Table 6.
Cohen’s weighted kappa with quadratic weighting for baseline items in descending order
| Item | Overall reliability (n = 50–53) | Intra-rater reliability (n = 19–20) | Inter-rater reliability (n = 31–33) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| %a | Weighted Kappa (95% CI) | Kmax | K/ Kmax | %a | Weighted Kappa (95% CI) | Kmax | K/ Kmax | %a | Weighted Kappa (95% CI) | Kmax | K/ Kmax | |
| Bowel movement | 88.68 | 0.66 (0.37;0.96) | 0.95 | 0.70 | 95.00 | 0.85 (0.51;1) | 0.85 | 1 | 84.85 | 0.58 (0.21;0.95) | 0.86 | 0.68 |
| Walking | 64.00 | 0.63 (0.46;0.81) | 0.95 | 0.61 | 78.95 | 0.84 (0.72;0.97) | 0.87 | 0.97 | 54.84 | 0.49 (0.23;0.75) | 0.84 | 0.58 |
| Gardening | 84.91 | 0.55 (0.26;0.84) | 0.68 | 0.81 | 85.00 | 0.74 (0.41;1) | nc | nc | 84.85 | 0.39 (0.05;0.74) | 0.66 | 0.60 |
| Shortness of breath | 60.38 | 0.54 (0.33;0.75) | 0.97 | 0.56 | 60.00 | 0.56 (0.24;0.88) | 0.97 | 0.58 | 60.61 | 0.53 (0.26;0.80) | 0.91 | 0.58 |
| Independence | 80.77 | 0.54 (0.28;0.79) | 0.96 | 0.56 | 85.00 | 0.74 (0.48;0.99) | nc | nc | 78.13 | 0.44 (0.11;0.77) | 0.86 | 0.51 |
| Pain | 66.04 | 0.52 (0.32;0.72) | 0.95 | 0.55 | 75.00 | 0.56 (0.24;0.88) | 0.83 | 0.67 | 60.61 | 0.49 (0.24;0.74) | 0.76 | 0.64 |
| Sports | 75.47 | 0.51 (0.25;0.76) | 0.75 | 0.68 | 80.00 | 0.65 (0.30;0.99) | 0.96 | 0.67 | 72.73 | 0.38 (0.10;0.66) | nc | nc |
| Knowing what is wrong | 67.92 | 0.48 (0.26;0.70) | 0.95 | 0.50 | 60.00 | 0.30 (0;0.68) | 0.97 | 0.31 | 72.73 | 0.58 (0.33;0.83) | 0.88 | 0.66 |
| Energy | 54.72 | 0.43 (0.21;0.66) | 0.94 | 0.46 | 65.00 | 0.62 (0.30;0.86) | 0.62 | 1 | 48.48 | 0.35 (0.09;0.61) | 0.64 | 0.55 |
| Controlling disease | 59.62 | 0.42 (0.21;0.63) | 0.78 | 0.54 | 60.00 | 0.50 (0.20;0.80) | 0.62 | 0.80 | 59.38 | 0.38 (0.11;0.66) | 0.95 | 0.40 |
| Groceries | 77.36 | 0.40 (0.14;0.66) | 0.95 | 0.42 | 90.00 | 0.85 (nc) | 0.85 | 1 | 69.70 | 0.28 (0;0.57) | 0.94 | 0.30 |
| Hobbies | 76.92 | 0.30 (0.03;0.57) | 0.95 | 0.31 | 70.00 | 0.34 (0;0.74) | 0.94 | 0.36 | 81.25 | 0.27 (0;0.62) | 0.70 | 0.38 |
| Visiting | 75.47 | 0.29 (0.05;0.53) | 0.96 | 0.30 | 75.00 | 0.47 (0.09;0.85) | 0.86 | 0.55 | 75.76 | 0.14 (0;0.28) | 0.95 | 0.14 |
| Outings | 67.31 | 0.28 (0.09;0.48) | 0.74 | 0.38 | 70.00 | 0.44 (0.13;0.74) | 0.44 | 1 | 65.63 | 0.21 (0;0.43) | 0.99 | 0.21 |
| Alive | 62.26 | 0.28 (0.06;0.50) | 0.91 | 0.31 | 75.00 | 0.45 (0.09;0.80) | 0.72 | 0.63 | 54.55 | 0.16 (0;0.43) | 0.99 | 0.16 |
| Appetite | 75.00 | 0.25 (0.07;0.43) | 0.66 | 0.38 | 73.68 | nc | nc | nc | 75.76 | 0.46 (0;0.93) | 0.72 | 0.65 |
| Washing and dressing | 73.08 | 0.25 (0.02;0.48) | 0.96 | 0.26 | 70.00 | 0.29 (0;0.61) | 0.72 | 0.40 | 75.00 | 0.23 (0;0.53) | 0.83 | 0.28 |
| Enjoying life | 65.38 | 0.17 (0;0.38) | 0.75 | 0.23 | 85.00 | 0.65 (0.34;0.97) | 0.65 | 1 | 53.13 | −0.12 (−0.39;0.14) | 0.85 | −0.14 |
| Better | 60.38 | 0.14 (0.01;0.27) | 0.60 | 0.23 | 75.00 | 0.62 (0.23;1) | 0.84 | 0.74 | 51.52 | −0.16 (nc) | 0.52 | −0.31 |
| Driving | 83.02 | 0.05 (nc) | 0.87 | 0.05 | 95.00 | 0.44 (0;1) | 0.44 | 1 | 75.76 | −0.08 (nc) | 0.62 | −0.14 |
| Home | 94.23 | nc | nc | nc | 95.00 | nc | nc | nc | 93.75 | nc | nc | nc |
| Extra | nc | nc | nc | nc | nc | nc | nc | nc | nc | nc | nc | nc |
| Mean | 72.04 | 0.38 | 0.86 | 0.44 | 77.03 | 0.58 | 0.77 | 0.75 | 69.00 | 0.30 | 0.81 | 0.35 |
a% = percentage of agreement, K = kappa Kmax = maximum attainable weighted kappa CI = Confidence interval nc = not calculated