| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1064 |
88.7%
|
| 1 | Once or twice | 37 |
3.1%
|
| 2 | Several times | 47 |
3.9%
|
| 3 | Many times | 43 |
3.6%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 7 |
0.6%
|