Concentration of Zinc, Copper, Selenium, Manganese, and Cu/Zn Ratio in Hair of Children and Adolescents with Myopia

Table 6

Spearman’s rank correlation coefficients for control group.

	Zn	Cu	Se	Mn	Cu/Zn ratio
Age	0.01	−0.08	0.03	−0.01	0.04
Zn	1.00	−0.08	0.06	0.23	−0.82
Cu	—	1.00	−0.18	0.10	0.58
Se	—	—	1.00	0.06	−0.14
Mn	–	—	—	1.00	−0.19
Cu/Zn ratio	—	—	—	—	1.00

Statistically significant correlation at 0.05 significance level.