| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, own initiative | 82 |
5.4%
|
| 2 | Yes, doctor’s initiative | 49 |
3.2%
|
| 3 | Yes, screening program | 5 |
0.3%
|
| 4 | No | 1349 |
88.4%
|
| 5 | Don’t know | 41 |
2.7%
|
| Sysmiss | 1425 |