Association of Serum Melatonin Level with Mild Cognitive Impairment in Type 2 Diabetic Patients: A Cross-Sectional Study

Figure 2

Correlation of serum melatonin to thyroid hormone in diabetic patients. Serum melatonin levels are positively correlated with (a) FT3 (r = 0.170,  = 0.008) and (b) FT4 (r = 0.172,  = 0.007) and are negatively correlated with (c) TSH (r = −0.137,  = 0.032). Spearman’s rank correlation test was performed.

(a)

(b)

(c)