| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0%
|
| 0 | Never | 1599 |
66.6%
|
| 1 | Just once or twice | 365 |
15.2%
|
| 2 | Several times | 222 |
9.3%
|
| 3 | Many times | 106 |
4.4%
|
| 4 | Always | 100 |
4.2%
|
| 9 | Don't Know | 7 |
0.3%
|
| 998 | 0 |
0%
|