| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 15 |
0%
|
| 0 | Never | 25815 |
50%
|
| 1 | Just once or twice | 7414 |
14.4%
|
| 2 | Several times | 10042 |
19.5%
|
| 3 | Many times | 6685 |
13%
|
| 4 | Always | 1541 |
3%
|
| 9 | Don't Know | 75 |
0.1%
|
| 998 | Refused | 0 |
0%
|