Urinary iodine content

(µg/L)

Urban

Rural

Total

N

%

N

%

N

%

≥100 (adequate)

82

77.6

241

56

323

61.1

50 - 99 (slight deficiency)

20

17.8

132

32

152

28.7

20 - 49 (moderate deficiency)

4

2.9

36

7.2

40

6.2

<20 (severe deficiency)

1

1.6

24

4.8

25

4.0

Total

107

100

433

100

540

100