| Value | Category | Cases | |
|---|---|---|---|
| -98 | Don't know | 40 |
5.8%
|
| 1 | 1-2 times | 42 |
6.1%
|
| 2 | 3-5 times | 394 |
56.9%
|
| 3 | 4-6 times | 208 |
30.1%
|
| 4 | None | 8 |
1.2%
|
| a | Not applicable | 0 | |
| b | Don't know | 0 | |
| c | Refused to respond | 0 |