| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1058 |
88.2%
|
| 1 | Once | 98 |
8.2%
|
| 2 | Twice | 28 |
2.3%
|
| 3 | Three or more times | 14 |
1.2%
|
| 9 | Don't know / Can't remember | 2 |
0.2%
|
| 98 | Refused | 0 |
0%
|