| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, own initiative | 61 |
2.1%
|
| 2 | Yes, doctor’s initiative | 41 |
1.4%
|
| 3 | Yes, screening program | 5 |
0.2%
|
| 4 | No | 2740 |
92.8%
|
| 5 | Don’t know | 104 |
3.5%
|