Table 2 Comparison of variables before and after propensity score matching between high and low EAL on super high-flux hemodialysis
Variable | Before matching | After matching | ||||
|---|---|---|---|---|---|---|
EAL ≥ 3.0 g/session | EAL < 3.0 g/session | P-value | EAL ≥ 3.0 g/session | EAL < 3.0 g/session | P-value | |
(a) EAL ≥ 3.0 g/session vs. EAL < 3.0 g/session | ||||||
n | 117 | 193 | 115 | 115 | ||
Sex, male/female, % | 71.8/29.2 | 42.5/57.5 | 0.109 | 71.3/28.7 | 60.0/40.0 | 0.095 |
Diabetes mellitus, % with/without | 39.3/60.7 | 40.2/59.8 | 0.635 | 39.1/60.9 | 40.9/59.1 | 0.893 |
Age, years | 68.5 ± 10.3 | 73.9 ± 10.4 | < 0.001 | 68.9 ± 10.1 | 71.3 ± 11.1 | 0.067 |
Dialysis vintage, months | 108.5 ± 90.9 | 89.6 ± 91.3 | 0.019 | 107.9 ± 90.2 | 127.8 ± 97.5 | 0.102 |
Body mass index, kg/m2 | 22.6 ± 4.2 | 21.3 ± 3.5 | 0.009 | 22.6 ± 4.1 | 21.7 ± 3.5 | 0.160 |
Normalized protein catabolism rate, g/kg/day | 0.8 ± 0.2 | 0.8 ± 0.2 | 0.253 | 0.8 ± 0.2 | 0.8 ± 0.2 | 0.905 |
Albumin, g/dL | 3.4 ± 0.3 | 3.3 ± 0.4 | 0.027 | 3.4 ± 0.3 | 3.4 ± 0.4 | 0.487 |
Corrected calcium, mg/dL | 9.1 ± 0.7 | 9.3 ± 0.7 | 0.0496 | 9.1 ± 0.7 | 9.4 ± 0.8 | 0.002 |
Phosphorus, mg/dL | 5.1 ± 1.5 | 4.9 ± 1.4 | 0.282 | 5.1 ± 1.5 | 5.0 ± 1.4 | 0.723 |
Hemoglobin, g/dL | 11.2 ± 1.2 | 10.9 ± 1.1 | 0.042 | 11.1 ± 1.2 | 10.8 ± 1.2 | 0.019 |
High-sensitivity C-reactive protein, mg/dL | 0.337 ± 0.617 | 0.664 ± 1.546 | 0.282 | 0.338 ± 0.622 | 0.432 ± 0.807 | 0.695 |
Kt/V value | 1.66 ± 0.28 | 1.73 ± 0.37 | 0.019 | 1.66 ± 0.28 | 1.72 ± 0.35 | 0.077 |
Variable | Before matching | After matching | ||||
|---|---|---|---|---|---|---|
Type II-b dialyzers | Type II-a dialyzers | P-value | Type II-b dialyzers | Type II-a dialyzers | P-value | |
(b) Type II-b dialyzers vs. type II-a dialyzers | ||||||
n | 133 | 177 | 133 | 133 | ||
Sex, male/female, % | 71.4/28.6 | 62.1/37.9 | 0.091 | 71.4/28.6 | 62.4/37.6 | 0.152 |
Diabetes mellitus, % with/without | 39.1/60.9 | 42.9/57.1 | 0.560 | 39.1/60.9 | 43.6/56.4 | 0.534 |
Age, years | 68.8 ± 10.4 | 74.3 ± 10.3 | < 0.001 | 68.8 ± 10.4 | 74.4 ± 10.3 | < 0.001 |
Dialysis vintage, months | 108.3 ± 90.4 | 88.0 ± 91.6 | 0.008 | 108.3 ± 90.4 | 88.1 ± 87.6 | 0.018 |
Body mass index, kg/m2 | 22.5 ± 4.2 | 21.3 ± 3.5 | 0.025 | 22.5 ± 4.2 | 21.4 ± 3.4 | 0.060 |
Normalized protein catabolism rate, g/kg/day | 0.9 ± 0.2 | 0.8 ± 0.2 | 0.013 | 0.9 ± 0.2 | 0.8 ± 0.2 | 0.058 |
Albumin, g/dL | 3.4 ± 0.3 | 3.3 ± 0.4 | 0.009 | 3.4 ± 0.3 | 3.3 ± 0.4 | 0.020 |
Corrected calcium, mg/dL | 9.1 ± 0.7 | 9.3 ± 0.7 | 0.094 | 9.1 ± 0.7 | 9.2 ± 0.7 | 0.236 |
Phosphorus, mg/dL | 5.1 ± 1.5 | 4.9 ± 1.5 | 0.084 | 5.1 ± 1.5 | 4.9 ± 1.5 | 0.167 |
Hemoglobin, g/dL | 11.1 ± 1.2 | 10.9 ± 1.1 | 0.097 | 11.1 ± 1.2 | 10.9 ± 1.1 | 0.246 |
High-sensitivity C-reactive protein, mg/dL | 0.480 ± 1.337 | 0.585 ± 1.248 | 0.181 | 0.480 ± 1.337 | 0.492 ± 0.887 | 0.221 |
Kt/V value | 1.67 ± 0.28 | 1.73 ± 0.38 | 0.041 | 1.67 ± 0.28 | 1.74 ± 0.37 | 0.025 |