| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | currently using | 317 |
27.7%
|
| 2 | used since last brth | 0 |
0%
|
| 3 | used before last brt | 364 |
31.8%
|
| 4 | never used | 465 |
40.6%
|