| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 1044 |
87%
|
| 1 | Once | 117 |
9.8%
|
| 2 | Twice | 20 |
1.7%
|
| 3 | Three or more times | 14 |
1.2%
|
| 9 | Don't know / Can't remember | 3 |
0.3%
|
| 98 | Refused | 0 |
0%
|