The proportion of the 74 participating laboratories in house tumours submitted for run 41 that showed a higher degree of oestrogen receptor (ER) expression* when tested by the UK NEQAS organising laboratory
| ER expression (participant) | n | ER expression (organising lab) | n | Quick score (participant) | Quick score (organising lab) | % | χ2 Value | p Value |
|---|---|---|---|---|---|---|---|---|
| *Achieved a quick score that was greater by 2 marks or more. | ||||||||
| Medium | 42 | High | 29 | 5 | 7 | 69% | 6.095 | 0.014 |
| 4 | 6 or 7 | |||||||
| Low | 24 | High/Medium | 20 | 3 | > 4 | 83% | 10.667 | 0.001 |
| 2 | > 3 | |||||||
| Negative | 8 | High | 5 | 0 | 6, 6 | 63% | 0.500 | 0.480 |
| Low | 3, 3 | |||||||
| 2 | ||||||||