| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 813 |
68.3%
|
| 1 | Just once or twice | 133 |
11.2%
|
| 2 | Several times | 143 |
12%
|
| 3 | Many times | 55 |
4.6%
|
| 4 | Always | 40 |
3.4%
|
| 9 | Don't know | 6 |
0.5%
|
| 998 | Refused | 0 |
0%
|