| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 633 |
52.8%
|
| 1 | Just once or twice | 92 |
7.7%
|
| 2 | Several times | 212 |
17.7%
|
| 3 | Many times | 137 |
11.4%
|
| 4 | Always | 121 |
10.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 5 |
0.4%
|