Iodine Deficiency in Patients with Hypothyroidism: A Pilot Study

Table 3

Correlation between TSH value and urine iodine excretion.

	Combined correlation coefficient	p value	(S)H group correlation coefficient	value	T1DM correlation coefficient	value
Urinary iodine excretion (µg)	−0.127	0.396^3	0.054	0.801^3	−0.302	0.161^3
Urinary iodine concentration (µg/L)	−0.102	0.543^3	0.021	0.928^3	−0.041	0.873^3
Iodine creatinine ratio (µmol/mmol)	−0.148	0.316^3	−0.064	0.767^3	−0.383	0.065^3

TSH, thyroid-stimulating hormone; (S)H, overt or subclinical hypothyroidism; T1DM, type 1 diabetes mellitus; ³Spearman’s rank correlation coefficient analysis. To convert iodine µg to µmol, a conversion factor of 0.0079 was used.