Differences in the assesssment of subgrades
| Grade | Complete agreement | One grade difference | Two grade difference |
| Grade 0 | 23% | 51% | 27% |
| Grade 1 | 48% | 49% | 3% |
| Grade 2A | 35% | 46% | 19% |
| Grade 2B | 48% | 36% | 16% |
| Grade 3 | 66% | 31% | 3% |
| Grade 4 | 66% | 17% | 17% |
Intragrade differences and variability of intensity for grades 0, 1, 2, 3, and 4. Results are expressed as percentage of the total number of biopsies scored for a particular item.