| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 905 |
75.4%
|
| 1 | Only once | 57 |
4.8%
|
| 2 | A few times | 132 |
11%
|
| 3 | Often | 97 |
8.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 9 |
0.8%
|