| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 887 |
74%
|
| 1 | Just once or twice | 143 |
11.9%
|
| 2 | Several times | 98 |
8.2%
|
| 3 | Many times | 46 |
3.8%
|
| 4 | Always | 6 |
0.5%
|
| 9 | Don’t know | 17 |
1.4%
|
| 98 | Refused | 0 |
0%
|