| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Not pretreated | 0 |
0%
|
| 1 | Pretreated, permanent treatment | 1825 |
73.3%
|
| 2 | Pretreated, requiring future treatment | 75 |
3%
|
| 3 | Not pretreated, came with kit and treated at home | 0 |
0%
|
| 4 | Pretreated, treatment type not known | 0 |
0%
|
| 6 | Other | 394 |
15.8%
|
| 8 | Don't know | 197 |
7.9%
|
| 9 | 21 | ||
| Sysmiss | 1970 |