| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 522 |
43.6%
|
| 1 | Just once or twice | 354 |
29.6%
|
| 2 | Many times | 244 |
20.4%
|
| 3 | Always | 66 |
5.5%
|
| 9 | Don't Know | 9 |
0.8%
|
| 998 | Refused | 0 |
0%
|