| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no net | 1659 |
47.9%
|
| 1 | only treated nets | 1636 |
47.2%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 170 |
4.9%
|
| Sysmiss | 13622 |