From: The relationship of different levels of high iodine and goiter in school children: a meta-analysis
UIC (μg/l)
Goiter
Not goiter
χ2
P
100–300
3405
53,918
734.605
< 0.001
300–500
2499
24,157
500–800
1381
11,732
800––1000
182
1116
≥ 1000
310
1606