| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1180 |
49.2%
|
| 1 | Just once or twice | 345 |
14.4%
|
| 2 | Several times | 361 |
15%
|
| 3 | Many times | 260 |
10.8%
|
| 4 | Always | 254 |
10.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|