| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 1035 |
86.3%
|
| 1 | Once | 123 |
10.3%
|
| 2 | Twice | 16 |
1.3%
|
| 3 | Three or more times | 14 |
1.2%
|
| 9 | Don't know / Can't remember | 10 |
0.8%
|
| 98 | Refused | 0 |
0%
|