| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 2073 |
86.7%
|
| 1 | Yes, once | 174 |
7.3%
|
| 2 | Yes, twice | 87 |
3.6%
|
| 3 | Yes, three or more times | 39 |
1.6%
|
| 8 | Refused | 5 |
0.2%
|
| 9 | Don't know | 14 |
0.6%
|