| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1247 |
52%
|
| 1 | Once or twice | 290 |
12.1%
|
| 2 | A few times | 421 |
17.5%
|
| 3 | Often | 440 |
18.3%
|
| 8 | Refused | 1 |
0%
|
| 9 | Don't know | 1 |
0%
|