Table 3.

Bivariate correlation analyses of RDW levels and various clinical and laboratory parameters of study population.

Parameter	r	P
Age	0.134	0.463*
Gender	0.078	0.822†
HD duration	0.251	0.048†
Presence of DM	0.161	0.351†
Presence of CAD	0.102	0.125†
Mean arterial pressure	0.086	0.301*
Interdialytic weight gain	0.395	0.021*
Cardiothoracic index	0.188	0.091*
Hemoglobin	−0.077	0.224*
Serum ferritin	−0.180	0.098*
Transferrin saturation	−0.134	0.136†
Serum creatinine	0.104	0.177†
Serum calcium	−0.062	0.455*
Serum phosphate	0.296	0.038*
iPTH	0.077	0.502†
Serum total cholesterol	0.128	0.211†
Serum triglyceride	0.055	0.401†
Serum albumin	−0.602	0.006*
CRP	0.415	0.014*
URR	−0.115	0.102*
kT/V	−0.162	0.088*

*Pearson correlation test.

^†Spearman's correlation test.

HD: hemodialysis, DM: diabetes mellitus, CAD: coronary artery disease, iPTH: intact parathyroid hormone, CRP: C-reactive protein, and URR: urea reduction ratio.