| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 870 |
72.5%
|
| 1 | Just once or twice | 214 |
17.8%
|
| 2 | Several times | 88 |
7.3%
|
| 3 | Many times | 22 |
1.8%
|
| 4 | Always | 4 |
0.3%
|
| 9 | Dont Know | 1 |
0.1%
|
| 998 | Refused | 0 |
0%
|