| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Never | 1705 |
71%
|
| 2 | Once or Twice | 316 |
13.2%
|
| 3 | A few times | 190 |
7.9%
|
| 4 | Often | 129 |
5.4%
|
| 9 | Don't know | 60 |
2.5%
|