| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 5 |
0%
|
| 0 | Never | 13133 |
51.7%
|
| 1 | Just once or twice | 3063 |
12.1%
|
| 2 | Several times | 3948 |
15.5%
|
| 3 | Many times | 3020 |
11.9%
|
| 4 | Always | 2183 |
8.6%
|
| 9 | Don't Know | 45 |
0.2%
|
| 998 | Refused | 0 |
0%
|