| Value | Category | Cases | |
|---|---|---|---|
| 1 | not iodized (o ppm) | 677 |
14.6%
|
| 2 | less than 15 ppm | 1602 |
34.5%
|
| 3 | 15 ppm or more | 2278 |
49.1%
|
| 4 | no salt in home | 16 |
0.3%
|
| 5 | salt not tested | 71 |
1.5%
|