. Author manuscript; available in PMC: 2009 Nov 1.

Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2008 Nov;17(11):3233–3240. doi: 10.1158/1055-9965.EPI-08-0459

Table 2.

Spearman correlation coefficients for serum biomarkers among controls

	Folate	Vitamin B6	Homocysteine	Vitamin B12	Riboflavin
Folate (nmol/L)	1.00	0.29^*	−0.33^*	0.19^*	0.23^*
Pyridoxal-5'-phosphate (pmol/ml)		1.00	−0.16^*	0.11	0.17^*
Homocysteine (nmol/ml)			1.00	−0.14^†	−0.07
Vitamin B12 (pmol/L)				1.00	0.24^*
Riboflavin (pmol/ml)					1.00

p < 0.01

^†

p < 0.05