| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1151 |
91.6%
|
| 1 | Only once | 31 |
2.5%
|
| 2 | A few times | 49 |
3.9%
|
| 3 | Often | 22 |
1.8%
|
| 9 | Don't know | 3 |
0.2%
|
| 998 | Refused | 0 |
0%
|