| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Currently using | 178 |
20.4%
|
| 2 | Used since last birth | 25 |
2.9%
|
| 3 | Used before last birth | 80 |
9.2%
|
| 4 | Never used | 591 |
67.6%
|