From: International study on inter-reader variability for circulating tumor cells in breast cancer
No CTC versus CTC | CTC HER2- versus CTC HER2+ | |||||||
---|---|---|---|---|---|---|---|---|
RDs | N | Agreement (%) | Kappa statistic | Kappa agreement | N | Agreement (%) | Kappa statistic | Kappa agreement |
A | 267 | 91.8% | 0.83 | Almost perfect | 155 | 81.3% | 0.63 | Substantial |
B | 267 | 91.4% | 0.82 | Almost perfect | 155 | 81.3% | 0.63 | Substantial |
C | 267 | 92.5% | 0.84 | Almost perfect | 155 | 90.3% | 0.81 | Almost perfect |
D | 267 | 91.8% | 0.83 | Almost perfect | 155 | 71.6% | 0.47 | Moderate |
E | 266 | 95.1% | 0.90 | Almost perfect | 154 | 93.5% | 0.87 | Almost perfect |
F | 267 | 92.1% | 0.84 | Almost perfect | 155 | 87.1% | 0.75 | Substantial |
G | 267 | 91.4% | 0.82 | Almost perfect | 155 | 91.0% | 0.82 | Almost perfect |
H | 267 | 91.4% | 0.82 | Almost perfect | 155 | 88.4% | 0.78 | Substantial |
I | 267 | 92.1% | 0.84 | Almost perfect | 155 | 91.6% | 0.84 | Almost perfect |
J | 267 | 83.9% | 0.65 | Substantial | 155 | 76.8% | 0.55 | Moderate |
K | 220 | 87.3% | 0.74 | Substantial | 117 | 79.5% | 0.59 | Moderate |
L | 266 | 92.9% | 0.85 | Almost perfect | 154 | 94.8% | 0.90 | Almost perfect |
M | 220 | 87.3% | 0.74 | Substantial | 117 | 90.6% | 0.82 | Almost perfect |
N | 267 | 95.9% | 0.92 | Almost perfect | 155 | 92.3% | 0.85 | Almost perfect |
O | 267 | 96.6% | 0.93 | Almost perfect | 155 | 92.9% | 0.86 | Almost perfect |
P | 267 | 94.4% | 0.88 | Almost perfect | 155 | 85.2% | 0.72 | Substantial |
Q | 218 | 91.7% | 0.83 | Almost perfect | 113 | 84.1% | 0.69 | Substantial |
R | 218 | 91.7% | 0.83 | Almost perfect | 113 | 85.8% | 0.73 | Substantial |
S | 220 | 92.7% | 0.85 | Almost perfect | 117 | 86.3% | 0.73 | Substantial |
T | 266 | 69.2% | 0.37 | Fair | 154 | 51.3% | 0.25 | Fair |
U | 267 | 91.4% | 0.82 | Almost perfect | 155 | 91.0% | 0.82 | Almost perfect |
V | 220 | 91.8% | 0.84 | Almost perfect | 117 | 82.1% | 0.66 | Substantial |