| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 18 |
0.8%
|
| 0 | Never | 2077 |
86.5%
|
| 1 | Once | 181 |
7.5%
|
| 2 | Twice | 49 |
2%
|
| 3 | Three or more times | 58 |
2.4%
|
| 9 | Don't know / Can't remember | 17 |
0.7%
|
| 98 | Refused | 0 |
0%
|