| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, THE ENTIRE QUESTIONNAIRE | 9 |
1.2%
|
| 2 | YES, PARTS OF THE QUESTIONNAIRE | 6 |
0.8%
|
| 3 | NO, NOT USED | 565 |
76.8%
|
| Sysmiss | 156 |
21.2%
|