Table 5.

Pearson bivariate correlation analysis on serum ferritin and metal elements among diabetes study subjects

Tested parameters	Zn+2 (µg/dL)	Mg+2 (mg/dL)	Cr+3 (µg/L)	Fe+3 (µg/dL)	Ferritin (µg/L)	Cu+2 (µg/dL)	Mn+2 (µg/L)	Ca+2 (mg/dL)	Po4+3 (mg/dL)
Zn+2 (µg/dL)
r	1	0.738	0.233	0.062	−0.032	−0.296	0.039	0.238	0.222
p-Value	–	<0.0001**	<0.001**	0.367	0.645	<0.0001**	0.572	<0.0001**	<0.001**
Mg+2 (mg/dL)
r	0.738	1	0.358	−0.103	−0.042	−0.171	0.079	0.157	0.209
p-Value	<0.0001**	–	<0.0001**	0.134	0.544	0.012**	0.250	0.022	0.002**
Cr+3 (µg/L)
r	0.233	0.358	1	0.01	0.031	−0.03	0.068	0.211	0.298
p-Value	<0.001**	<0.0001**	–	0.885	0.653	0.661	0.321	0.002*	<0.0001**
Fe+3 (µg/dL)
r	0.062	−0.103	0.010	1	0.665	0.189	0.065	0.020	−0.058
p-Value	0.367	0.134	0.885	–	<0.0001**	0.0001**	0.343	0.772	0.402
Ferritin (µg/L)
r	−0.032	−0.042	0.031	0.665	1	0.327	0.085	0.024	0.006
p-Value	0.645	0.544	0.653	<0.0001**	–	<0.0001**	0.218	0.732	0.927
Cu+2 (µg/dL)
r	−0.296	−0.171	−0.03	0.189	0.327	1	0.275	−0.138	−0.087
p-Value	<0.0001**	0.012**	0.661	<0.0001**	<0.0001**	–	<0.0001**	0.044	0.205
Mn+2 (µg/L)
r	0.039	0.079	0.068	0.065	0.085	0.275	1	−0.144	−0.090
p-Value	0.572	0.250	0.321	0.343	0.218	<0.0001**	–	0.036	0.192
Ca+2 (mg/dL)
r	0.238	0.157	0.211	0.020	0.024	−0.138	−0.144	1	0.527
p-Value	<0.0001**	0.022	0.002**	0.772	0.732	0.044	0.036	–	<0.0001**
Po4+3 (mg/dL)
r	0.222	0.209	0.298	−0.058	0.006	−0.087	−0.090	0.527	1
p-Value	<0.001**	0.002**	<0.0001**	0.402	0.927	0.205	0.192	<0.0001**	–

Note:

^**Pearson correlation is significant at the 0.01 level (two tailed).