| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1211 |
52.1%
|
| 1 | Only once | 319 |
13.7%
|
| 2 | A few times | 533 |
22.9%
|
| 3 | Often | 247 |
10.6%
|
| 9 | Don't know | 14 |
0.6%
|
| 998 | Refused | 0 |
0%
|