Parameters

Patients (n = 37) Mean ± SD

Control (n = 37) Mean ± SD

“t” value

P value

Mg (mmol/l) at

Recruitment

0.75 ± 0.028

0.76 ± 0.036

−1.523

0.123

Mg (mmol/l) at diagnosis/control

0.53 ± 0.06

0.69 ± 0.08

−9.52

0.000