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Table 3 Prevalence of thyroid functions according to iodine status

From: Evaluation of median urinary iodine concentration cut-off for defining iodine deficiency in pregnant women after a long term USI in China

Gestation N Normal thyroid function Clinical hypothyroidism Subclinical hypothyroidism Clinical hyperthyroidism Subclinical hyperthyroidism Isolated hypothyroxinemia
6th 79 79 (100%) 0 0 0 0 0
12th 79 72 (91.14%) 0 2 (2.53%) 1 (1.27%) 4 (5.06%) 0
24th 78 73 (93.59%) 1 (1.28%) 0 0 0 4 (5.13%)
32th 78 69 (88.46%) 1 (1.28%) 4 (5.13%)   1 (1.28%) 3 (3.85%)
Total 314 293 (93.31%) 2 (0.64%) 6 (1.91%) 1 (0.032%) 5 (1.59%) 7 (2.23%)