Table 3 Comparison of variables before and after propensity score matching in type IV and type II groups
Variable | Before matching | After matching | ||||
|---|---|---|---|---|---|---|
IV | II | P value | IV | II | P value | |
n (%male) | 97,927 (62.1) | 3277 (49.6) | < 0.0001 | 1846 (51.7) | 1846 (49.7) | 0.223 |
Age, years | 70.9 ± 11.8 | 77.4 ± 10.1 | < 0.0001 | 77.3 ± 9.8 | 77.0 ± 10.1 | 0.396 |
Vintage, months | 61 (28–121) | 46 (21–98) | < 0.0001 | 47 (21–90) | 47 (21–95) | 0.120 |
Diabetes mellitus, % | 54.2 | 57.2 | 0.003 | 54.3 | 56.9 | 0.105 |
Comorbid CVD, % | 35.2 | 42.7 | < 0.0001 | 42.6 | 44.8 | 0.185 |
Systolic BP, mmHg | 150 ± 25 | 147 ± 27 | < 0.0001 | 149 ± 25 | 149 ± 26 | 0.870 |
Diastolic BP, mmHg | 76 ± 14 | 73 ± 15 | < 0.0001 | 74 ± 14 | 74 ± 14 | 0.214 |
Heart rate, bpm | 74 ± 13 | 73 ± 13 | 0.006 | 73 ± 13 | 73 ± 13 | 0.298 |
BMI, kg/m2 | 21.3 ± 3.9 | 19.7 ± 3.5 | < 0.0001 | 19.9 ± 3.6 | 19.8 ± 3.6 | 0.373 |
Serum UN, mg/dL | 59.6 ± 15.8 | 55.5 ± 17.5 | < 0.0001 | 60.7 ± 15.3 | 60.8 ± 15.2 | 0.088 |
Creatinine, mg/dL | 9.4 ± 2.8 | 7.4 ± 2.7 | < 0.0001 | 10.1 ± 2.7 | 10.2 ± 2.7 | 0.739 |
β2MG, mg/L | 26.9 ± 6.9 | 30.1 ± 9.9 | < 0.0001 | 29.8 ± 9.6 | 30.0 ± 9.9 | 0.135 |
Kt/V | 1.47 ± 0.31 | 1.35 ± 0.31 | < 0.0001 | 1.37 ± 0.32 | 1.36 ± 0.31 | 0.363 |
Serum albumin, g/dL | 3.5 ± 0.5 | 3.2 ± 0.6 | < 0.0001 | 3.6 ± 0.4 | 3.6 ± 0.4 | 0.546 |
Hemoglobin, g/dL | 10.8 ± 1.3 | 10.5 ± 1.4 | < 0.0001 | 10.6 ± 1.3 | 10.6 ± 1.3 | 0.587 |
CRP, mg/dL | 0.16 (0.06–0.50) | 0.25 (0.08–0.90) | < 0.0001 | 0.21 (0.07–0.66) | 0.21 (0.07–0.69) | 0.637 |
Calcium, mg/dL | 8.7 ± 0.7 | 8.5 ± 0.8 | < 0.0001 | 8.5 ± 0.8 | 8.5 ± 0.8 | 0.329 |
Phosphate, mg/dL | 5.1 ± 1.4 | 4.8 ± 1.5 | < 0.0001 | 4.8 ± 1.4 | 4.8 ± 1.4 | 0.773 |
Intact-PTH, pg/mL | 127 (69–205) | 110 (57–188) | < 0.0001 | 112 (60–193) | 111 (54–187) | 0.567 |
nPCR, g/kg/day | 0.84 ± 0.18 | 0.77 ± 0.19 | < 0.0001 | 0.77 ± 0.18 | 0.77 ± 0.17 | 0.303 |