| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0%
|
| 0 | Never | 1010 |
42.1%
|
| 1 | Just once or twice | 433 |
18.1%
|
| 2 | Several times | 457 |
19.1%
|
| 3 | Many times | 271 |
11.3%
|
| 4 | Always | 225 |
9.4%
|
| 9 | Don't Know | 1 |
0%
|
| 98 | Refused | 0 |
0%
|