| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Never | 858 |
52.9%
|
| 1 | Once or twice | 437 |
26.9%
|
| 2 | More often | 328 |
20.2%
|
| 9 | 11 | ||
| Sysmiss | 1416 |