| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1013 |
63.3%
|
| 1 | Only once | 195 |
12.2%
|
| 2 | A few times | 280 |
17.5%
|
| 3 | Often | 111 |
6.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 1 |
0.1%
|