| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | currently using | 1862 |
14.9%
|
| 2 | used since last birth | 0 |
0%
|
| 3 | used before last birth | 1818 |
14.6%
|
| 4 | never used | 8797 |
70.5%
|