| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 945 |
40.7%
|
| 1 | Just once or twice | 472 |
20.3%
|
| 2 | Several times | 515 |
22.2%
|
| 3 | Many times | 206 |
8.9%
|
| 4 | Always | 170 |
7.3%
|
| 9 | Don't Know | 16 |
0.7%
|
| 998 | Refused | 0 |
0%
|