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Correlations between urinary iodine excretions and iodine content of household’s table salt by sex (left) and areas of residence (right). Left: men r = 0.025, p = 0.662, women r = 0.021, p = 0.630; right: rural r = 0.061, p = 0.164, urban r = −0.055, p = 0.325.
