| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 890 |
80.6%
|
| 1 | Only once | 69 |
6.3%
|
| 2 | A few times | 88 |
8%
|
| 3 | Often | 54 |
4.9%
|
| 9 | Don't know | 2 |
0.2%
|
| 98 | Refused | 0 |
0%
|