| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 763 |
64.1%
|
| 1 | Just once or twice | 117 |
9.8%
|
| 2 | Several times | 129 |
10.8%
|
| 3 | Many times | 94 |
7.9%
|
| 4 | Always | 85 |
7.1%
|
| 9 | Don't know | 2 |
0.2%
|
| 998 | Refused | 0 |
0%
|