| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 1506 |
63%
|
| 1 | Yes, once | 515 |
21.5%
|
| 2 | Yes, twice | 232 |
9.7%
|
| 3 | Yes, three or more times | 119 |
5%
|
| 8 | Refused | 6 |
0.3%
|
| 9 | Don't know | 14 |
0.6%
|