Urinary iodine in early pregnancy is associated with subclinical hypothyroidism in Tianjin, China: an observational study

Table 2 Comparison of urinary iodine concentration (UIC) frequency distribution between the euthyroidism and subclinical hypothyroidism groups

Group	UIC (μg/L) frequency distribution				Total
Group	≤50	51–149	150–249	≥250	Total
Euthyroidism	6	45	43	10	104
Subclinical hypothyroidism	7	50	30	28	115
Total	13	95	73	38	219
P	0.921	0.975	0.017	0.004	0.014

ISSN: 1472-6823