| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 13 |
0%
|
| 0 | not applicable | 1256 |
3.6%
|
| 1 | once | 2046 |
5.9%
|
| 2 | more than once | 6349 |
18.3%
|
| 3 | never | 24858 |
71.5%
|
| 8 | can't choose | 198 |
0.6%
|
| 9 | decline to answer | 48 |
0.1%
|
| Sysmiss | 47249 |