| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | currently using | 369 |
18.8%
|
| 2 | used since last birth | 193 |
9.8%
|
| 3 | used before last birth | 203 |
10.3%
|
| 4 | never used | 1203 |
61.1%
|