| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Never | 1985 |
82.7%
|
| 2 | Once or Twice | 231 |
9.6%
|
| 3 | A few times | 125 |
5.2%
|
| 4 | Often | 42 |
1.8%
|
| 9 | Don't know | 17 |
0.7%
|