| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2103 |
87.6%
|
| 1 | Only once | 103 |
4.3%
|
| 2 | A few times | 117 |
4.9%
|
| 3 | Often | 49 |
2%
|
| 9 | Don't know | 28 |
1.2%
|
| 998 | Refused | 0 |
0%
|