| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, less than 12 months ago | 1102 |
18%
|
| 2 | Yes, more than 12 months ago | 530 |
8.7%
|
| 3 | Never | 4485 |
73.3%
|
| Sysmiss | 87059 |