. 2013 Oct 27;29(1):76–83. doi: 10.1177/1533317513506778

Table 3.

Correlations Between Serum Copper Levels and Cognitive Functions.

		J1	J2	J3	J4	J5	J6	J7	J8
Pb	Pearson correlation	−.042	−.114	−.09	−.086	.061	−.149^a	−.17^a	−.106
Pb	Sig (2-tailed)	.565	.115	.213	.233	.404	.039	.019	.143
Cd	Pearson correlation	−.115	−.057	−.087	−.013	−.052	−.073	−.055	−.059
Cd	Sig (2-tailed)	.113	.431	.228	.854	.472	.312	.446	.417
As	Pearson correlation	−.017	−.035	.046	−.031	.056	−.031	−.001	.047
As	Sig (2-tailed)	.815	.627	.523	.665	.438	.667	.99	.517
Hg	Pearson correlation	−.052	.005	−.013	−.077	.061	−.121	−.117	−.039
Hg	Sig (2-tailed)	.473	.946	.862	.291	.401	.095	.105	.596

Abbreviations: Pb, lead; Cd, cadmium; As, arsenic; Hg, mercury; MMSE, Mini-Mental State Examination; J1, verbal fluency test: animal category; J2, Modified Boston Naming test; J3, MMSE; J4, word list memory; J5, constructional praxis; J6, word list recall; J7, word list recognition; J8, constructional recall; Sig, significant.

^a Correlation is significant at the .05 level (2-tailed).