| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1048 |
87.3%
|
| 1 | Once | 97 |
8.1%
|
| 2 | Twice | 23 |
1.9%
|
| 3 | Three or more times | 27 |
2.3%
|
| 9 | Don't know / Can't remember | 5 |
0.4%
|
| 98 | Refused | 0 |
0%
|