| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1102 |
87.4%
|
| 1 | Only once | 50 |
4%
|
| 2 | A few times | 53 |
4.2%
|
| 3 | Often | 26 |
2.1%
|
| 9 | Don't know | 30 |
2.4%
|
| 998 | Refused | 0 |
0%
|
| Sysmiss | 3 |