| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | not pretreated | 0 |
0%
|
| 1 | pretreated, permanent treatment | 5730 |
97%
|
| 2 | pretreated, requiring future treatment | 71 |
1.2%
|
| 3 | not pretreated, came with kit and treated at home | 0 |
0%
|
| 4 | pretreated, treatment type not known | 0 |
0%
|
| 6 | other | 65 |
1.1%
|
| 8 | don't know | 39 |
0.7%
|
| Sysmiss | 543 |