| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1952 |
81.3%
|
| 1 | Only once | 208 |
8.7%
|
| 2 | A few times | 182 |
7.6%
|
| 3 | Often | 46 |
1.9%
|
| 9 | Don't know | 12 |
0.5%
|
| 98 | Refused | 0 |
0%
|