Table 3.

Geometric mean (GM) and p-values for Zn in all analysed samples according to sex and age (ng/g)

		Serum	Whole blood	CSF	Brain tissue	Thyroid tissue
Total		552	5060	35.1	2616	5578
Sex	Female	537	4710	30.3	2570	5329
	Male	588	5701	39.0	2865	6466
	p-value	0.033	0.042	0.903	0.658	0.021
Age	< 50 years	510	4649	37.7	2780	5178
	≥ 50 years	597	5373	42.1	2912	6036
	p-value	0.029	0.039	0.750	0.693	0.033