| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1523 |
63.5%
|
| 1 | Only once | 216 |
9%
|
| 2 | A few times | 393 |
16.4%
|
| 3 | Often | 202 |
8.4%
|
| 9 | Don't know | 66 |
2.8%
|
| 98 | Refused | 0 |
0%
|