| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 10 |
0.8%
|
| 0 | Never | 844 |
70.5%
|
| 1 | Once | 192 |
16%
|
| 2 | Twice | 69 |
5.8%
|
| 3 | Three or more times | 57 |
4.8%
|
| 9 | Don't know / Can't remember | 26 |
2.2%
|
| 98 | Refused | 0 |
0%
|