| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 1061 |
88.4%
|
| 1 | Only once | 55 |
4.6%
|
| 2 | A few times | 56 |
4.7%
|
| 3 | Often | 21 |
1.8%
|
| 9 | Don't know | 6 |
0.5%
|