| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1897 |
79.8%
|
| 1 | Once or twice | 229 |
9.6%
|
| 2 | A few times | 176 |
7.4%
|
| 3 | Often | 59 |
2.5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 17 |
0.7%
|