| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1191 |
88.2%
|
| 1 | Only once | 35 |
2.6%
|
| 2 | A few times | 65 |
4.8%
|
| 3 | Often | 39 |
2.9%
|
| 9 | Don't know | 20 |
1.5%
|
| 998 | Refused | 0 |
0%
|