| Age (i) | Age (j) | Mean Difference | Significance (p) |
| 18 - 19 | 20 - 21 | 3.603 | 0.329 |
| 22 - 23 | 3.977 | 0.268 | |
| 24 and older | 7.978* | 0.026 | |
| 20 - 21 | 18 - 19 | −3.603 | 0.329 |
| 22 - 23 | 0.374 | 0.993 | |
| 24 and older | 4.375 | 0.209 | |
| 22 - 23 | 18 - 19 | −3.977 | 0.268 |
| 20 - 21 | −0.374 | 0.993 | |
| 24 and older | 4.000 | 0.306 |