| ET1.Q | SET (n = 30) | DET (n = 60) | ||
| No. | % | No. | % | |
| 6 AA | 1 | 3.3 | 2 | 3.3 |
| 5AA | 5 | 16.7 | 1 | 1.7 |
| 4AA | 14 | 46.7 | 21 | 35.0 |
| 4AB | 0 | 0.0 | 3 | 5.0 |
| 4BB | 0 | 0.0 | 2 | 3.3 |
| 3AA | 1 | 3.3 | 6 | 10.0 |
| 3AB | 1 | 3.3 | 0 | 0.0 |
| 3BB | 1 | 3.3 | 0 | 0.0 |
| 2AA | 1 | 3.3 | 5 | 8.3 |
| 2AB | 1 | 3.3 | 2 | 3.3 |
| 2BB | 0 | 0.0 | 2 | 3.3 |
| 1AA | 5 | 16.7 | 16 | 26.7 |
| χ2 (MCp) | 15.325 (0.089) | |||