Table 5.

Correlation between hair metal levels in the studied cohort.

p/r	Al	As	Cd	Hg	Ni	Pb
Al	-	0.409	0.421	−0.008	0.228	0.359
As	<0.001 *	-	0.421	0.055	0.047	0.336
Cd	<0.001 *	<0.001 *	-	−0.095	0.347	0.563
Hg	0.830	0.164	0.015 *	-	0.051	0.033
Ni	<0.001 *	0.234	<0.001 *	0.192	-	0.297
Pb	<0.001 *	<0.001 *	<0.001 *	0.404	<0.001 *	-

Data are expressed as correlation coefficient (r) (upper right part) and the respective p values (lower left part); *—correlation is significant at p < 0.05.