| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2088 |
87%
|
| 1 | Only once | 112 |
4.7%
|
| 2 | A few times | 145 |
6%
|
| 3 | Often | 42 |
1.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 13 |
0.5%
|