| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | not pretreated | 0 |
0%
|
| 1 | pretreated, permanent treatment | 4698 |
97.3%
|
| 2 | pretreated, requiring future treatment | 54 |
1.1%
|
| 3 | not pretreated, came with kit and treated at home | 0 |
0%
|
| 4 | pretreated, treatment type not known | 0 |
0%
|
| 6 | other | 50 |
1%
|
| 8 | don't know | 28 |
0.6%
|
| Sysmiss | 1618 |