| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1092 |
91%
|
| 1 | Only once | 32 |
2.7%
|
| 2 | A few times | 45 |
3.8%
|
| 3 | Often | 26 |
2.2%
|
| 9 | Don't know | 5 |
0.4%
|
| 998 | Refused | 0 |
0%
|