| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 762 |
63.5%
|
| 1 | Only once | 91 |
7.6%
|
| 2 | A few times | 201 |
16.8%
|
| 3 | Often | 140 |
11.7%
|
| 9 | Don't know | 4 |
0.3%
|
| 998 | Refused | 0 |
0%
|