| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Never | 1955 |
81.1%
|
| 2 | Once or twice | 258 |
10.7%
|
| 3 | A few times | 81 |
3.4%
|
| 4 | Often | 45 |
1.9%
|
| 9 | Don't know | 71 |
2.9%
|
| 999 | Refused | 0 |
0%
|