| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, own initiative | 402 |
13.6%
|
| 2 | Yes, doctor’s initiative | 290 |
9.8%
|
| 3 | Yes, screening program | 25 |
0.8%
|
| 4 | No | 2148 |
72.8%
|
| 5 | Don’t know | 86 |
2.9%
|