| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1039 |
86.7%
|
| 1 | Only once | 35 |
2.9%
|
| 2 | A few times | 34 |
2.8%
|
| 3 | Often | 32 |
2.7%
|
| 9 | Don't know | 58 |
4.8%
|
| 998 | Refused | 0 |
0%
|