| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 802 |
66.8%
|
| 1 | Only once | 110 |
9.2%
|
| 2 | A few times | 181 |
15.1%
|
| 3 | Often | 105 |
8.8%
|
| 9 | Don't know | 2 |
0.2%
|
| 998 | Refused | 0 |
0%
|