| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 899 |
70.3%
|
| 1 | Only once | 116 |
9.1%
|
| 2 | A few times | 176 |
13.8%
|
| 3 | Often | 69 |
5.4%
|
| 9 | Don't know | 16 |
1.3%
|
| 998 | Refused | 0 |
0%
|