| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 148 |
12.3%
|
| 1 | Just once or twice | 69 |
5.8%
|
| 2 | Several times | 255 |
21.3%
|
| 3 | Many times | 475 |
39.6%
|
| 4 | Always | 250 |
20.8%
|
| 9 | Don't Know | 1 |
0.1%
|
| 998 | Refused | 0 |
0%
|