| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 524 |
41%
|
| 1 | Just once or twice | 448 |
35.1%
|
| 2 | Many times | 268 |
21%
|
| 3 | Always | 34 |
2.7%
|
| 9 | Don't Know | 3 |
0.2%
|
| 998 | Refused | 0 |
0%
|