| Value | Category | Cases | |
|---|---|---|---|
| 0 | no net | 2394 |
40.6%
|
| 1 | only treated nets | 3439 |
58.3%
|
| 2 | both treated and untreated nets | 2 |
0%
|
| 3 | only untreated nets | 62 |
1.1%
|
| Sysmiss | 8737 |