Discordance in positive rates for different tumour markers examined in different tissue types for Dukes’ B and C colorectal cancers
| Discordance for Dukes’ B cases | p Value | Discordance for Dukes’ C cases | p Value | |
|---|---|---|---|---|
| The p values are based on the binomial test at 95% comparison with significance set at p<0.05. | ||||
| FT, frozen tissue; PET, paraffin wax embedded tissue. | ||||
| CEA (PET) v CK20 (PET) | 27.3% | 0.015 | 40.0% | 0.000 |
| CEA (PET) v GCC (PET) | 45.5% | 0.000 | 46.7% | 0.000 |
| CK20 (PET) v GCC (PET) | 36.4% | 0.000 | 60.0% | 0.000 |
| CEA (FT) v CK20 (FT) | 22.2% | 0.071 | 23.1% | 0.025 |
| CEA (FT) v GCC (FT) | 33.3% | 0.000 | 15.4% | 0.135 |
| CK20 (FT) v GCC (FT) | 55.6% | 0.001 | 38.5% | 0.000 |
| CEA (PET) v CEA (FT) | 33.3% | 0.008 | 7.7% | 0.487 |
| CK20 (PET) v CK20 (FT) | 33.3% | 0.008 | 23.1% | 0.025 |
| GCC (PET) v GCC (FT) | 44.4% | 0.001 | 38.5% | 0.000 |