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. 2016 Jun 6;6(6):e212. doi: 10.1038/nutd.2016.19

Table 2. Association between plasma coffee polyphenols and plasma diabetes biomarkers.

Biomarkers Total coffee polyphenol Caffeic acid Chlorogenic acid
Glucose 0.1 0.12 −0.25*
Glycated hemoglobin 0.16 0.19 −0.25*
Adiponectin −0.11 −0.12 0.1
Insulin 0.12 0.12 −0.01
C-reactive protein 0.02 0.02 −0.26**

Values are Spearman's correlation coefficients (n=57) with *P<0.1, **P<0.05.