| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 994 |
82.8%
|
| 1 | Once | 129 |
10.8%
|
| 2 | Twice | 35 |
2.9%
|
| 3 | Three or more times | 36 |
3%
|
| 9 | Don't know / Can't remember | 4 |
0.3%
|
| 98 | Refused | 0 |
0%
|