Table 1 Baseline characteristics
|  | Training and internal validation cohort (n = 218) | External validation cohort (n = 40) | All cohort (n = 258) |
|---|---|---|---|
Male(n;%) | 141; 64.68% | 21; 52.50% | 162; 62.79% |
Female(n;%) | 77; 35.32% | 19; 47.50% | 96; 37.21% |
Age(year) | 61.8 ± 14.21 | 61.7 ± 11.21 | 61.77 ± 13.36 |
Height(cm) | 165.57 ± 8.64 | 163.38 ± 9.03 | 164.9 ± 8.82 |
Pre-dialysis weight(kg) | 60.53 ± 12.78 | 58.98 ± 11.07 | 60.06 ± 12.3 |
BMI(kg/m2) | 21.98 ± 3.66 | 21.97 ± 2.92 | 21.98 ± 3.45 |
CGN(chronic glomerulonephritis)(n;%) | 97; 44.50% | 23; 57.50% | 120; 46.51% |
HTN(hypertension)(n;%) | 162; 74.31% | 40; 100.00% | 202; 78.29% |
DM(diabetes mellitus)(n;%) | 33; 15.14% | 8; 20.00% | 41; 15.89% |
Gout(n;%) | 14; 6.42% | 3; 7.50% | 17; 6.59% |
Others(n;%) | 113; 51.83% | 17; 42.50% | 130; 50.39% |
Pre-dialysis heart rate | 77.69 ± 13.58 | 73.43 ± 12.29 | 76.39 ± 13.34 |
Pre-dialysis SBP(mmHg) | 145.01 ± 23.59 | 150.25 ± 21.53 | 146.61 ± 23.11 |
Pre-dialysis DBP(mmHg) | 75.09 ± 13.53 | 81.25 ± 13.05 | 76.97 ± 13.68 |
1-hour SBP(mmHg) | 137.89 ± 22.52 | 140.22 ± 20.23 | 138.61 ± 21.87 |
2-hour SBP(mmHg) | 135.69 ± 22.49 | 139.53 ± 19.73 | 136.87 ± 21.76 |
3-hour SBP(mmHg) | 135.5 ± 23.11 | 139.40 ± 20.05 | 136.69 ± 22.29 |
4-hour SBP(mmHg) | 132.26 ± 23.76 | 136.65 ± 20.30 | 133.60 ± 22.85 |
1-hour DBP(mmHg) | 74.13 ± 13.05 | 78.57 ± 12.94 | 75.49 ± 13.18 |
2-hour DBP(mmHg) | 74.78 ± 13.36 | 79.10 ± 12.59 | 76.10 ± 13.28 |
3-hour DBP(mmHg) | 75.42 ± 13.62 | 79.72 ± 12.75 | 76.73 ± 13.51 |
4-hour DBP(mmHg) | 74.65 ± 14.01 | 78.84 ± 12.67 | 75.93 ± 13.75 |
Pre-dialysis MAP(mmHg) | 98.39 ± 14.22 | 104.25 ± 14.06 | 100.18 ± 14.42 |
1-hour MAP(mmHg) | 95.38 ± 13.90 | 99.12 ± 14.15 | 96.53 ± 14.08 |
2-hour MAP(mmHg) | 95.08 ± 14.37 | 99.24 ± 13.75 | 96.36 ± 14.31 |
3-hour MAP(mmHg) | 95.44 ± 14.73 | 99.61 ± 13.95 | 96.72 ± 14.62 |
4-hour MAP(mmHg) | 93.85 ± 15.30 | 98.11 ± 14.00 | 95.16 ± 15.05 |
WBC(white blood cell)(*10^9/L) | 6.18 ± 2.08 | 5.31 ± 1.33 | 5.91 ± 1.92 |
Hb(hemoglobin)(g/L) | 110.31 ± 17.75 | 108.40 ± 13.95 | 109.72 ± 16.70 |
Hct(hematocrit)(%) | 33.7 ± 5.28 | 33.88 ± 4.32 | 33.76 ± 5.01 |
Plt(platelet)(*10^9/L) | 185.72 ± 56.27 | 167.05 ± 51.29 | 180.01 ± 55.46 |
Alb(albumin)(g/L) | 38.3 ± 4.40 | 38.48 ± 3.33 | 38.35 ± 4.10 |
Ca(calcium)(mmol/L) | 2.27 ± 0.23 | 2.33 ± 0.24 | 2.29 ± 0.23 |
K(potassium)(mmol/L) | 4.63 ± 0.80 | 5.01 ± 0.95 | 4.74 ± 0.87 |
P(phosphorus)(mmol/L) | 1.67 ± 0.58 | 1.81 ± 0.58 | 1.71 ± 0.58 |
Na(sodium)(mmol/L) | 138.89 ± 3.23 | 139.59 ± 11.79 | 139.11 ± 7.06 |
KT/V(urea clearance index) | 1.57 ± 0.56 | 1.51 ± 0.26 | 1.55 ± 0.49 |
URR(urea reduction ratio) | 0.71 ± 0.08 | 71.28 ± 6.72 | 22.30 ± 32.73 |
CTR(cardiothoracic ratio) | 0.49 ± 0.05 | 0.55 ± 0.06 | 0.51 ± 0.06 |
LVMI(left ventricular mass index)(g/m2) | 101.52 ± 42.20 | 49.39 ± 30.36 | 85.57 ± 45.77 |
DW(dry weight)(kg) | 57.9 ± 12.48 | 57.60 ± 11.35 | 57.81 ± 12.14 |
UFV(ultrafiltration volume)(L) | 2.63 ± 1.01 | 2.63 ± 0.85 | 2.63 ± 0.96 |
UFR(ultrafiltration rate)(%) | 0.66 ± 0.25 | 0.66 ± 0.22 | 0.66 ± 0.24 |
DF(dialysis frequency)(per week) | 2.8 ± 0.52 | 3.97 ± 0.13 | 3.16 ± 0.70 |
DD(dialysis duration)(h) | 3.98 ± 0.14 | 3.97 ± 0.13 | 3.98 ± 0.13 |