Table 4.

Degree of reliability and correlation in continuous and quintiles flavonoid intake estimations by databases and methods used.

Comparisona	ICC (95% CI)	Kappa (95% CI)	Spearman's Rho
PE - Total aglycones & PE - Total aglycones transformed.	0.99 (0.99–0.99)	0.98 (0.94–0.96)	0.99
PE - Total aglycones & PE - Total glycosides	0.97 (0.94–0.99)	0.96 (0.96–0.97)	0.98
PE - Aglycones tranformed & PE Total glycosides	0.98 (0.84–0.99)	0.96 (0.96–0.97)	0.99
PE - Total aglycones & USDA - Total aglycones	0.73 (0.70–0.76)	0.89 (0.88–0.90)	0.92
PE - Aglycones transformed. & USDA - Total aglycones	0.72 (0.68–0.76)	0.88 (0.87–0.90)	0.91
PE Total glycosides & USDA - Total aglycones	0.76 (0.73–0.77)	0.87 (0.86–0.89)	0.91

PE, Phenol Explorer; USDA, United States Department of Agriculture; ICC, intraclass coefficient, worked as continuous variable; Kappa, Kappa weighted squared, worked as categorical variable (quintiles).