Table 4.

Correlations between the serum level of iron, copper, and calcium and clinical parameters (age, duration, severity, and body mass index) in patient’s group

	Iron		Copper		Calcium
	r	P	r	P	r	P
Age	−0.116	0.540	0.023	0.905	−0.495	0.005*
Duration	−0.291	0.119	−0.193	0.307	−0.620	0.001*
Severity	−0.453	0.012*	−0.194	0.305	−0.635	0.001*
BMI	−0.198	0.294	−0.070	0.712	−0.219	0.245

*Significant – P≤0.05. BMI – Body mass index