| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 675 |
56.3%
|
| 1 | Just once or twice | 121 |
10.1%
|
| 2 | Several times | 244 |
20.3%
|
| 3 | Many times | 111 |
9.3%
|
| 4 | Always | 44 |
3.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 5 |
0.4%
|