Table 2. Correlations between serum bilirubin and demographic and laboratory parameters.

	All subjects		Subjects with high serum bilirubin		Subjects with low serum bilirubin
	r	P-value	r	P-value	r	P-value
Age	0.377	< 0.001	0.001	0.992	0.305	< 0.001
Body mass index	−0.157	0.011	−0.024	0.785	−0.118	0.171
White blood count	−0.133	0.031	0.113	0.193	−0.051	0.567
Hemoglobin	0.285	< 0.001	0.082	0.346	0.230	0.009
Mean corpuscular hemoglobin	0.350	< 0.001	0.038	0.662	0.314	< 0.001
Mean corpuscular hemoglobin concentration	0.171	0.005	0.064	0.460	0.207	0.019
Alanine aminotransferase	0.215	< 0.001	0.029	0.741	0.268	0.002
Aspartate aminotransferase	0.034	0.587	0.029	0.738	0.108	0.224
Creatinine	0.370	< 0.001	0.067	0.440	0.218	0.013
Albumin	0.011	0.865	−0.011	0.906	0.004	0.961
Globulin	0.087	0.158	0.083	0.348	−0.002	0.983
High-sensitivity C-reactive protein	−0.311	< 0.001	−0.187	0.030	−0.325	< 0.001
Serum iron	0.452	< 0.001	0.275	0.001	0.394	< 0.001
Serum copper	−0.475	< 0.001	−0.266	0.002	−0.485	< 0.001
Serum zinc	0.311	< 0.001	0.180	0.037	0.335	< 0.001

r: correlation coefficient.

Note: High corresponds to individuals with bilirubin levels higher than 11.6 μmol/L.