| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2194 |
91%
|
| 1 | Once or twice | 79 |
3.3%
|
| 2 | A few times | 28 |
1.2%
|
| 3 | Often | 20 |
0.8%
|
| 9 | Don't know | 89 |
3.7%
|
| 998 | Refused | 0 |
0%
|