Table 3. Pairwise comparisons of trace element concentrations between populations.

	Calcium		Zinc		Iron		Manganese		Copper		Arsenic		Lead
Contrast	t (63)	p	t (63)	p	t (63)	p	t (63)	p	t (63)	p	t (63)	p	t (63)	p
US—Namibia	5.62	< .001	-1.43	0.634	-0.99	0.653	-5.27	< .001	1.02	0.627	-5.28	< .001	-3.01	0.013
US—Poland	3.53	0.003	-0.51	1.000	4.01	0.001	3.74	< .001	-0.96	0.627	-1.83	0.072	-2.20	0.062
US—Argentina	1.70	0.187	-2.60	0.070	2.81	0.020	-6.16	< .001	-2.83	0.032	-3.81	0.001	3.06	0.013
Namibia—Poland	-3.43	0.003	1.12	0.803	3.57	0.003	7.75	< .001	-1.65	0.314	4.19	< .001	1.64	0.107
Namibia—Argentina	-4.68	< .001	-0.36	1.000	3.05	0.014	1.13	0.261	-3.09	0.018	2.82	0.019	5.34	< .001
Poland—Argentina	-1.63	0.187	-2.20	0.156	-0.95	0.653	-9.98	< .001	-2.00	0.198	-2.19	0.065	5.29	< .001