| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 983 |
81.9%
|
| 1 | Once or twice | 101 |
8.4%
|
| 2 | A few times | 73 |
6.1%
|
| 3 | Often | 43 |
3.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|