| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 471 |
39.3%
|
| 1 | Just once or twice | 258 |
21.5%
|
| 2 | Several times | 271 |
22.6%
|
| 3 | Many times | 166 |
13.8%
|
| 4 | Always | 30 |
2.5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't Know | 4 |
0.3%
|