| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, THE ENTIRE QUESTIONNAIRE | 1648 |
8.2%
|
| 2 | YES, PARTS OF THE QUESTIONNAIRE | 451 |
2.2%
|
| 3 | NO, NOT USED | 17958 |
89.5%
|
| Sysmiss | 591 |