Table 3.

Results from multiple linear regression analysis which assessed the association between transformed total dietary polyphenols and transformed urine TPE expressed as 100 mg GAE/24-h urine (model 1) and expressed as 100 mg GAE/g urinary creatinine (model 2), after adjusting for covariates.

	Model 1 (expressed by 24-h volume)		Model 2 (expressed by creatinine)
	B-coefficients (IC 95%)	P-value	B-coefficients (IC 95%)	P-value
Constant of the model	5.170 (4.896 to 5.445)	<0.001	5.297 (5.028 to 5.565)	<0.001
Crude urine TPE	0.072 (0.042 to 0.103)	<0.001	0.030 (0.012 to 0.049)	0.002
Gender (female vs. male)	0.085 (−0.131 to −0.039)	<0.001	−0.103 (−0.149 to −0.056)	<0.001
Age (per year)	0.003 (0.001 to 0.005)	0.002	0.002 (0.001 to 0.004)	0.013
BMI (kg m−2)	−0.002 (−0.007 to 0.003)	0.483	−0.002 (−0.007 to 0.003)	0.431
Physical activity	0.027 (0.003 to 0.051)	0.025	0.031 (0.007 to 0.055)	0.012
Energy intake (1000 kcal day−1)	0.344 (0.305 to 0.382)	<0.001	0.346 (0.308 to 0.385)	<0.001
Renal function
Impaired vs. normal	−0.023 (−0.070 to 0.025)	0.347	−0.034 (−0.081 to 0.014)	0.161
Profoundly impaired or failure vs. normal	−0.014 (−0.182 to 0.154)	0.868	−0.045 (−0.214 to 0.124)	0.600