| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1306 |
54.2%
|
| 1 | Only once | 300 |
12.4%
|
| 2 | A few times | 513 |
21.3%
|
| 3 | Often | 272 |
11.3%
|
| 9 | Don't know | 19 |
0.8%
|
| 998 | Refused | 0 |
0%
|