| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 749 |
62.4%
|
| 1 | Only once | 84 |
7%
|
| 2 | A few times | 143 |
11.9%
|
| 3 | Often | 220 |
18.3%
|
| 9 | Don't know | 4 |
0.3%
|
| 998 | Refused | 0 |
0%
|