| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, the entire questionnaire | 69 |
1.6%
|
| 2 | Yes, parts of the questionnaire | 11 |
0.3%
|
| 3 | No, not used | 4120 |
97.3%
|
| 9 | No response | 34 |
0.8%
|
| Sysmiss | 420 |