| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1060 |
88.3%
|
| 1 | Once | 86 |
7.2%
|
| 2 | Twice | 29 |
2.4%
|
| 3 | Three or more times | 20 |
1.7%
|
| 9 | Don't know / Can't remember | 5 |
0.4%
|
| 98 | Refused | 0 |
0%
|