| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1975 |
83.6%
|
| 1 | Just once or twice | 209 |
8.8%
|
| 2 | Several times | 102 |
4.3%
|
| 3 | Many times | 43 |
1.8%
|
| 4 | Always | 30 |
1.3%
|
| 9 | Don't Know | 4 |
0.2%
|
| 998 | Refused | 0 |
0%
|