Table 4 Baseline characteristics after propensity score matching between type IV and other types of dialyzers.
From: High-performance dialyzers and mortality in maintenance hemodialysis patients
Matched | Matched | Matched | Matched | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
I | IV | P value | II | IV | P value | III | IV | P value | V | IV | P value | |
n (%) | 1104 | 1104 | – | 796 | 796 | – | 3867 | 3867 | – | 13,011 | 13,011 | – |
Age (years) | 75.2 ± 10.6 | 75.6 ± 10.2 | 0.385 | 71.2 ± 11.6 | 71.2 ± 11.4 | 0.945 | 67.7 ± 12.2 | 67.8 ± 11.8 | 0.740 | 60.9 ± 12.1 | 60.9 ± 12.5 | 0.992 |
Sex (% female) | 59.8 | 59.7 | 0.965 | 51.2 | 51.6 | 0.871 | 40.2 | 41.1 | 0.392 | 49.2 | 57.8 | 0.424 |
Dialysis vintage (years) | 5 [3–8] | 5 [3–8] | 0.725 | 4.5 [3–9] | 5 [3–9] | 0.461 | 6 [3–10] | 6 [3–10] | 0.554 | 8 [4–14] | 8 [4–14] | 0.704 |
Presence of DM (%) | 36.4 | 37.8 | 0.481 | 37.8 | 37.1 | 0.779 | 36.6 | 35.3 | 0.209 | 28.4 | 28.7 | 0.546 |
CVD comorbidity (%) | 34.1 | 33.4 | 0.718 | 31.7 | 31.3 | 0.861 | 27.6 | 27.6 | 0.979 | 20.3 | 20.7 | 0.416 |
BMI (kg/m2) | 19.6 ± 3.3 | 19.6 ± 3.2 | 0.801 | 20.4 ± 3.3 | 20.6 ± 3.4 | 0.460 | 20.9 ± 3.5 | 20.9 ± 3.5 | 0.834 | 21.6 ± 3.5 | 21.6 ± 3.5 | 0.854 |
Hemoglobin (g/dL) | 10.1 ± 1.4 | 10.1 ± 1.3 | 0.532 | 10.2 ± 1.2 | 10.2 ± 1.2 | 0.912 | 10.3 ± 1.3 | 10.3 ± 1.3 | 0.108 | 10.6 ± 1.2 | 10.6 ± 1.2 | 0.819 |
Serum albumin (g/dL) | 3.5 ± 0.5 | 3.5 ± 0.5 | 0.160 | 3.6 ± 0.4 | 3.6 ± 0.4 | 0.855 | 3.7 ± 0.4 | 3.7 ± 0.4 | 0.596 | 3.8 ± 0.4 | 3.8 ± 0.4 | 0.616 |
Calcium (mg/dL) | 8.8 ± 0.8 | 8.8 ± 0.9 | 0.582 | 8.8 ± 0.8 | 8.9 ± 0.8 | 0.295 | 9.0 ± 0.8 | 9.0 ± 0.8 | 0.471 | 9.0 ± 0.8 | 9.0 ± 0.8 | 0.876 |
Phosphate (mg/dL) | 4.9 ± 1.4 | 4.9 ± 1.4 | 0.143 | 5.1 ± 1.4 | 5.1 ± 1.3 | 0.721 | 5.2 ± 1.4 | 5.2 ± 1.4 | 0.824 | 5.4 ± 1.4 | 5.4 ± 1.4 | 0.901 |
β2MG (mg/L) | 30.9 ± 9.8 | 30.9 ± 9.9 | 0.188 | 29.0 ± 9.0 | 29.1 ± 8.8 | 0.750 | 27.8 ± 7.8 | 27.8 ± 7.3 | 0.899 | 27.1 ± 6.5 | 27.1 ± 6.6 | 0.412 |
C-reactive protein (mg/dL) | 0.16 [0.06–0.60] | 0.20 [0.08–0.61] | 0.241 | 0.12 [0.05–0.45] | 0.16 [0.07–0.52] | 0.805 | 0.13 [0.06–0.40] | 0.13 [0.06–0.40] | 0.261 | 0.10 [0.05–0.30] | 0.10 [0.05–0.30] | 0.885 |
Kt/V | 1.27 ± 0.28 | 1.27 ± 0.29 | 0.945 | 1.28 ± 0.27 | 1.28 ± 0.28 | 0.703 | 1.37 ± 0.28 | 1.38 ± 0.29 | 0.102 | 1.45 ± 0.30 | 1.44 ± 0.29 | 0.119 |
nPCR (g/kg/day) | 0.83 ± 0.18 | 0.83 ± 0.18 | 0.645 | 0.83 ± 0.17 | 0.83 ± 0.17 | 0.831 | 0.85 ± 0.17 | 0.86 ± 0.17 | 0.679 | 0.90 ± 0.17 | 0.90 ± 0.17 | 0.311 |
SCI (mg/kg/day) | 18.4 ± 2.7 | 18.3 ± 2.6 | 0.241 | 19.0 ± 2.9 | 18.9 ± 2.7 | 0.317 | 20.3 ± 3.0 | 20.6 ± 3.0 | 0.936 | 22.2 ± 2.9 | 22.2 ± 2.9 | 0.696 |
