Table 2 Comparison of variables before and after propensity score matching in type IV and type I groups
Variable | Before matching | After matching | ||||
|---|---|---|---|---|---|---|
IV | I | P value | IV | I | P value | |
n (%male) | 97,927 (62.1) | 1506 (47.0) | < 0.0001 | 763 (42.6) | 763 (44.9) | 0.353 |
Age, years | 70.9 ± 11.8 | 77.8 ± 9.8 | < 0.0001 | 77.9 ± 9.7 | 78.1± 9.7 | 0.768 |
Vintage, months | 61 (28–121) | 46 (19–101) | < 0.0001 | 44 (17–100) | 44 (19–99) | 0.712 |
Diabetes mellitus, % | 54.2 | 56.8 | 0.078 | 51.3 | 52.9 | 0.505 |
Comorbid CVD, % | 35.2 | 41.2 | < 0.0001 | 45.2 | 47.2 | 0.441 |
Systolic BP, mmHg | 150 ± 25 | 146 ± 27 | < 0.0001 | 148 ± 27 | 149 ± 27 | 0.605 |
Diastolic BP, mmHg | 76 ± 14 | 73 ± 15 | < 0.0001 | 73 ± 15 | 74 ± 14 | 0.886 |
Heart rate, bpm | 74 ± 13 | 74 ± 13 | 0.791 | 73 ± 13 | 73 ± 13 | 0.580 |
BMI, kg/m2 | 21.3 ± 3.9 | 19.4 ± 3.5 | < 0.0001 | 19.3 ± 3.5 | 19.3 ± 3.5 | 0.871 |
Serum UN, mg/dL | 59.6 ± 15.8 | 56.4 ± 18.7 | < 0.0001 | 56.4 ± 16.0 | 55.9 ± 17.3 | 0.519 |
Creatinine, mg/dL | 9.4 ± 2.8 | 7.0 ± 2.7 | < 0.0001 | 6.9 ± 2.5 | 7.0 ± 2.5 | 0.417 |
β2MG, mg/L | 26.9 ± 6.9 | 31.1 ± 11.6 | < 0.0001 | 30.6 ± 10.7 | 31.3 ± 11.5 | 0.203 |
Kt/V | 1.47 ± 0.31 | 1.31 ± 0.31 | < 0.0001 | 1.33 ± 0.30 | 1.32 ± 0.29 | 0.269 |
Serum albumin, g/dL | 3.5 ± 0.5 | 3.1 ± 0.6 | < 0.0001 | 3.2 ± 0.5 | 3.2 ± 0.5 | 0.871 |
Hemoglobin, g/dL | 10.8 ± 1.3 | 10.4 ± 1.5 | < 0.0001 | 10.5 ± 1.4 | 10.5 ± 1.4 | 0.501 |
CRP, mg/dL | 0.16 (0.06–0.50) | 0.30 (0.09–1.15) | < 0.0001 | 0.25 (0.08–0.80) | 0.24 (0.08–0.93) | 0.456 |
Calcium, mg/dL | 8.7 ± 0.7 | 8.5 ± 0.8 | < 0.0001 | 8.5 ± 0.8 | 8.5 ± 0.8 | 0.570 |
Phosphate, mg/dL | 5.1 ± 1.4 | 4.8 ± 1.7 | < 0.0001 | 4.7 ± 1.5 | 4.8 ± 11.6 | 0.362 |
Intact-PTH, pg/mL | 127 (69–205) | 108 (54–194) | 0.001 | 107 (54–186) | 110 (54–189) | 0.689 |
nPCR, g/kg/day | 0.84 ± 0.18 | 0.77 ± 0.20 | < 0.0001 | 0.78 ± 0.17 | 0.77 ± 0.18 | 0.217 |