Contingency table showing the overall level of agreement between the participants' assays and the organising laboratory's assay, on 152 breast carcinomas
| Organising laboratory's IHC assay | |||||
|---|---|---|---|---|---|
| Negative (0) | Low (2, 3) | Medium (4, 5) | High (6, 7) | Total | |
| Negative, low, medium, and high refer to relative oestrogen receptor expression of the 152 in house breast carcinomas as evaluated by the “Quick score” method, with the Quick scores in parenthesis. | |||||
| Participants' IHC assays | |||||
| Negative (0) | 3 | 3 | 2 | 8 | |
| Low (2, 3) | 3 | 6 | 15 | 24 | |
| Medium (4, 5) | 1 | 7 | 34 | 42 | |
| High (6, 7) | 6 | 72 | 78 | ||
| Total | 3 | 7 | 19 | 123 | 152 |