| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Never | 2074 |
86.1%
|
| 2 | Just once or twice | 250 |
10.4%
|
| 3 | Several times | 41 |
1.7%
|
| 4 | Many times | 8 |
0.3%
|
| 9 | Don't know | 37 |
1.5%
|
| 998 | Refused | 0 |
0%
|