| Value | Category | Cases | |
|---|---|---|---|
| 1 | frequently | 2157 |
3.4%
|
| 2 | rarely | 4026 |
6.4%
|
| 3 | no | 36597 |
57.9%
|
| 4 | not needed | 20427 |
32.3%
|
| Sysmiss | 1 |