| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 991 |
82.6%
|
| 1 | Only once | 60 |
5%
|
| 2 | A few times | 93 |
7.8%
|
| 3 | Often | 51 |
4.3%
|
| 9 | Don't know | 5 |
0.4%
|
| 998 | Refused | 0 |
0%
|