| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 ppm (no iodine) | 1223 |
3.8%
|
| 7 | 7 ppm | 14435 |
44.3%
|
| 15 | 15 ppm | 16429 |
50.4%
|
| 30 | 30 ppm | 0 |
0%
|
| 994 | Salt not tested | 107 |
0.3%
|
| 995 | No salt | 388 |
1.2%
|
| 997 | Not dejure resident | 0 |
0%
|
| 999 | Missing | 387 | |
| Sysmiss | 1627 |