Table 7.

Pearson product correlation coefficients for log-transformed Pb and Cd contents in hair, teeth, and blood of children from U and NU sites

U group	PBH	PBT	PBB	CDH	CDT	CDB	ZNH
PBH	–	0.30	0.23	0.69	0.26*	0.26	−0.24
PBT	0.30	–	0.40	0.39	0.65	0.23
PBB	0.23	0.40	–	0.32	0.27*	0.54
CDH	0.69	0.39*	0.32	–	0.22**		−0.26!!
CDT	0.26*	0.65	0.27*	0.22**	–
CDB	0.26	0.23	0.54			–
ZNH	−0.24			−0.26**			–
NU group	PBH	PBT	PBB	CDH	CDT	CDB	ZNH
PBH	–	0.30	0.39	0.66		0.21
PBT	0.30	–	0.38	0.18**	0.63	0.32
PBB	0.39	0.38	–			0.52
CDH	0.66	0.18**		–			0.39*
CDT		0.63			–
CDB	0.21	0.32	0.52			–
ZNH				0.39*			–

Correlation coefficients included at p < 0.05 or *p < 0.1 or **p < 0.2; correlations at p > 0.2 were omitted