| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Not pretreated | 0 |
0%
|
| 1 | Pretreated, permanent treatment | 2416 |
86.2%
|
| 2 | Pretreated, requiring future treatment | 32 |
1.1%
|
| 3 | Not pretreated, came with kit and treated at home | 0 |
0%
|
| 4 | Pretreated, treatment type not known | 0 |
0%
|
| 6 | Other | 183 |
6.5%
|
| 8 | Don't know | 159 |
5.7%
|
| 9 | 14 |
0.5%
|
|
| Sysmiss | 11620 |