Table 5. Correlation between MOCA score, clinical and laboratory data of the studied group of patients.

HD – hemodialysis, HDF – hemodiafiltration, p – p-value, MOCA – Montreal Cognitive Assessment score,  BMI – body mass index, IADL - IADL – Instrumental Activities of Daily Living, Hb – haemoglobin, dl – deciliter, ng – nanogram, ml- millilitre, TSAT – transferrin saturation, mg – milligram, HDL – high-density lipoprotein, LDL – low-density lipoprotein, pg – picogram, BUN – blood urea nitrogen, Kt/V – K is dialyzer clearance of urea, t – time, V – the volume of distribution of urea, approximately equal to patient’s total body water,  AST – aspartate transaminase, ALT – alanine transaminase, u-units, l – litre, iu – international units *- statistically significant

	MOCA score
Variable	Pearson Correlation	P
Clinical predictors
Age (years)	-0.417	<0.01*
BMI	-0.002	0.98
Dialysis Duration/months	0.011	0.87
Charlson Comorbidity Index	-0.246	<0.01*
Others
Education	0.138	0.32
Income	0.201	0.01
Activity Scores
Daily Activity Score	-0.012	0.85
IADL Score	0.001	0.56
Laboratory Data
Hb (gm/dl)	0.158	0.01*
Hematocrit (%)	-0.019	0.77
Ferritin (ng/ml)	-0.06	0.35
TSAT (%)	0.045	0.48
Cholestrol (mg/dl)	-0.055	0.43
HDL (mg/dl)	-0.021	0.76
LDL (mg/dl)	-0.137	0.05*
Triglyceride (mg/dl)	0.073	0.29
Calcium (mg/dl)	-0.090	0.16
Phosphate (mg/dl)	-0.024	0.71
Vitamin D (ng/ml)	0.187	<0.01*
Parathormone hormone (pg/ml)	-0.107	0.01*
Creatinine (mg/dl)	-0.067	0.30
BUN pre-dialysis (mg/dl)	-0.017	0.79
BUN post-dialysis (mg/dl)	0.052	0.42
Kt/V	0.008	0.91
AST (u/l)	0.037	0.57
ALT (u/l)	0.043	0.51
Albumin (gm/dl)	-0.063	0.33
Alkaline phosphatase (iu/l)	0.083	0.21