| Value | Category | Cases | |
|---|---|---|---|
| 1 | REGULARLY | 243 |
2.4%
|
| 2 | SOMETIMES | 2338 |
22.8%
|
| 3 | RARELY | 3075 |
30%
|
| 4 | NEVER | 4581 |
44.7%
|
| Sysmiss | 7818 |