| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | 1 - No, no difficulty | 10246 |
82.5%
|
| 2 | 2 - Yes, some difficulty | 1478 |
11.9%
|
| 3 | 3 - Yes, a lot of difficulty | 601 |
4.8%
|
| 4 | 4 - Cannot do it at all | 87 |
0.7%
|
| Sysmiss | 7856 |