| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, THE ENTIRE QUESTIONNAIRE | 19 |
0.5%
|
| 2 | YES, PARTS OF THE QUESTIONNAIRE | 3 |
0.1%
|
| 3 | NO, NOT USED | 3718 |
88.1%
|
| Sysmiss | 479 |
11.4%
|