Table 2. Data from the variational analysis and Student's t-test for the two-year period of follow-up of the two studied groups.

spKt/V: single-pool Kt/V, dialysis adequacy index; URR%: urea reduction ratio, dialysis adequacy index; nPCR (g/kg/d): normalized protein catabolic rate; Alb (g/l): serum albumin; Hgb (g/l): hemoglobin; ESA (UI/week): erythropoietin stimulating agent

Indicator (X±SD)	Group 2 (n=22)	Group 1 (n=19)	T-test, p-value	Group 2 (n=21)	Group 1 (n=14)	T-test, p-value
Year	2020			2021
Age (years)	53.9±11.96	56.63±11.07	t=-0.734, p=0.467	55.6±11.78	55.64±11.12	t=-0.738, p=0.465
spKt/V	1.82±0.12	1.3±0.11	t=14,52, p<0.00001	1.83±0.25	1.37±0.08	t=7.54, p<0.00001
URR%	79,46±1.45	69.01±5.8	t=7.647, p<0.00001	79.21±3.56	71.86±2.99	t=6.36, p<0.00001
nPCR (g/kg/d)	1.28±0.12	1.16±0.11	t=3.215, p=0.003	1.31±0.12	1.2±0.05	t=3.48, p=0.0024
Alb (g/l)	38.90±5.4	35.74±3.19	t=2.275, p=0.029	38.17±3.96	36.64±2.98	t=1.20289, p=0.238
Hgb (g/l)	111.64±4.43	102.32±5.19	t=6.20, p<0.00001	112.15±6.86	104.14±4.73	t=3.64, p<0.00001
ESA (UI/week)	5681±1742	9947±2328	t=6.53, p<0.00001	6142±2080	9714±1749	t=-4.01, p=0.000162