| Value | Category | Cases | |
|---|---|---|---|
| 0 | no net | 1341 |
37.1%
|
| 1 | only treated nets | 2201 |
60.9%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 72 |
2%
|