| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2058 |
85.8%
|
| 1 | Only once | 136 |
5.7%
|
| 2 | A few times | 130 |
5.4%
|
| 3 | Often | 47 |
2%
|
| 9 | Don't know | 29 |
1.2%
|
| 998 | Refused | 0 |
0%
|