| Value | Category | Cases | |
|---|---|---|---|
| 0 | no net | 320 |
52.5%
|
| 1 | only treated nets | 289 |
47.4%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 1 |
0.2%
|
| Sysmiss | 2407 |