| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 901 |
75.2%
|
| 1 | Only once | 117 |
9.8%
|
| 2 | A few times | 98 |
8.2%
|
| 3 | Often | 78 |
6.5%
|
| 9 | Don't know | 4 |
0.3%
|
| 98 | Refused | 0 |
0%
|