| Value | Category | Cases | |
|---|---|---|---|
| 0 | Knows no method | 211 |
9%
|
| 1 | Knows only folkloric | 2 |
0.1%
|
| 2 | Knows only trad. Mth | 17 |
0.7%
|
| 3 | Knows modern method | 2116 |
90.2%
|
| Sysmiss | 226 |