| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 2055 |
31.9%
|
| 2 | Once | 2555 |
39.7%
|
| 3 | Twice | 840 |
13%
|
| 4 | Three times | 383 |
5.9%
|
| 5 | More than three times | 605 |
9.4%
|
| -5 | Missing; RU: Inappropriate response | 0 | |
| -4 | Not asked in survey | 11448 | |
| -3 | Not applicable ('Not have done') | 70056 | |
| -2 | No answer | 1593 | |
| -1 | Don't know | 30 |