| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Never | 2492 |
98.6%
|
| 1 | Often | 11 |
0.4%
|
| 2 | Sometimes | 18 |
0.7%
|
| 3 | Yes, but not in the last 12 months | 5 |
0.2%
|
| 4 | Yes, but frequency in last 12 months missing | 2 |
0.1%
|
| 9 | 1 | ||
| Sysmiss | 2800 |