Urinary iodine (µg/L)

Iodine in salt (mg/kg)

Quantity below that recommended (<20)

Quantity recommended (≥20)

N

%

N

%

≥100 (adequate)

36

57.4

261

61.3

50 - 99 (slight deficiency)

17

23.2

124

29.5

20 - 49 (moderate deficiency)

9

11

28

5.8

<20 (severe deficiency)

6

8.3

18

3.4

Total

68

100

431

100