|
Kappa values |
||||||
| One cell |
≥ 10% invasive tumour staining |
≥ 20% invasive tumour staining |
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|
|
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| Obs. 1 |
Obs. 2 |
Obs. 1 |
Obs. 2 |
Obs. 1 |
Obs. 2 |
|
|
|
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| TMA biopsy versus whole section (central) |
0.56 |
0.51 |
0.71 |
0.65 |
0.68 |
0.61 |
| TMA biopsy versus whole section (peripheral) |
0.52 |
0.37 |
0.59 |
0.59 |
0.59 |
0.58 |
| Two different paraffin blocks (central biopsies) |
0.72 |
0.56 |
0.69 |
0.86 |
0.89 |
0.86 |
| Two different paraffin blocks (peripheral biopsies) |
0.66 |
0.33 |
0.42 |
0.49 |
0.41 |
-0.07 |
| Whole sections (two different paraffin blocks) |
0.70 |
0.55 |
0.72 |
0.74 |
0.70 |
0.70 |
|
Presented are κ values that describe comparisons between immunohistochemial stainings for carbonic anhydrase IX of 108 tissue microarray biopsies and 54 whole sections from 27 breast carcinomas. The κ values are presented for two observers and using different cut-points for determining positivity. | ||||||
Kyndi et al. Breast Cancer Research 2008 10:R24 doi:10.1186/bcr1981 |
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