| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no net | 508 |
78.9%
|
| 1 | only treated nets | 88 |
13.7%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 48 |
7.5%
|
| Sysmiss | 1324 |