| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 824 |
68.7%
|
| 1 | Only once | 175 |
14.6%
|
| 2 | A few times | 143 |
11.9%
|
| 3 | Often | 45 |
3.8%
|
| 9 | Don't know | 13 |
1.1%
|
| 98 | Refused | 0 |
0%
|