| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2025 |
84.4%
|
| 1 | Only once | 141 |
5.9%
|
| 2 | A few times | 167 |
7%
|
| 3 | Often | 65 |
2.7%
|
| 9 | Don't know | 2 |
0.1%
|
| 998 | Refused | 0 |
0%
|