Table 6.

Pearson bivariate correlation analysis on serum ferritin and metal elements with body mass index, waist-to-hip ratio, and fasting blood glucose among diabetes study subjects

Tested parameters	Body mass index (kg/m2)		Waist-to-hip ratio (cm)		Fasting blood glucose (mg/dL)
	r	p-value	r	p-value	r	p-value
Zn+2 (µg/dL)	−0.331	<0.0001**	−0.340	<0.0001**	−0.186	0.006**
Mg+2 (mg/dL)	−0.254	<0.0001**	−0.199	0.003*	−0.136	<0.0001**
Cr+3 (µg/L)	−0.121	0.077	0.002	0.974	−0.023	0.734
Fe+3 (µg/dL)	−0.099	0.148	−0.029	0.672	−0.111	0.106
Ferritin (µg/L)	−0.058	0.396	0.053	0.443	−0.100	0.144
Cu+2 (µg/dL)	0.140	0.04	0.327	<0.0001**	0.057	0.404
Mn+2 (µg/L)	0.021	0.755	0.282	<0.0001**	−0.008	0.912
Ca+2 (mg/dL)	−0.335	<0.0001**	−0.372	<0.0001**	−0.141	0.040
Po4−3 (mg/dL)	−0.380	<0.0001**	−0.309	<0.0001**	−0.159	<0.0001**

Notes: Data were presented as mean (standard deviation).

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