| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 905 |
75.2%
|
| 1 | Only once | 125 |
10.4%
|
| 2 | A few times | 87 |
7.2%
|
| 3 | Often | 82 |
6.8%
|
| 9 | Don't know | 5 |
0.4%
|
| 998 | Refused | 0 |
0%
|