| Scale | Definition |
| 1 | Comparing two factors, they have the same importance. |
| 3 | Comparing two factors, the former is slightly more important than the latter. |
| 5 | Comparing two factors, the former is more important than the latter. |
| 7 | Comparing two factors, the former is much more important than the latter. |
| 9 | Comparing two factors, the former is extremely more important than the latter. |
| 2, 4, 6, 8 | The intermediate value of the adjacent judgment. |