Table 1 Comparison of baseline parameters between patients without (group 1) and with (group 2) 30-day unexpected rehospitalization
Variables | Total (n = 1632) | Group 1(n = 1483) | Group 2 (n = 149) | P value |
|---|---|---|---|---|
Age (years) | 46.9 ± 15.3 | 46.6 ± 15.2 | 50.2 ± 16.8 | 0.013 |
Gender (male) n (%) | 981 (60.1) | 892 (60.1) | 89 (59.7) | 0.921 |
Primary kidney diseases n (%) | 0.331 | |||
 Chronic glomerulonephritis | 991 (60.7) | 905 (61.1) | 85 (57.0) | – |
 Diabetic nephropathy | 365 (22.4) | 324 (21.8) | 41 (27.5) | – |
 Hypertensive nephropathy | 113 (6.9) | 106 (7.1) | 7 (4.7) | – |
 Others | 163 (10.0) | 147 (9.9) | 16 (10.7) | – |
Diabetes mellitus n (%) | 417 (25.6) | 371 (25.0) | 46 (30.9) | 0.118 |
CVD history n (%) | 348 (21.3) | 313 (21.1) | 35 (23.5) | 0.498 |
BMI (kg/m2) | 21.8 ± 3.2 | 21.8 ± 3.2 | 22.0 ± 3.2 | 0.372 |
Mean blood pressure (mmHg) | 110.4 ± 16.8 | 109.0 ± 16.7 | 110.0 ± 18.5 | 0.760 |
Length of index hospital stay (day)a | 23.7 ± 10.1 | 23.5 ± 9.9 | 26.3 ± 12.0 | 0.006 |
Hemoglobin (g/L) | 79.2 ± 18.7 | 79.2 ± 18.7 | 78.3 ± 18.1 | 0.539 |
Platelet (109/L) | 193.6 ± 78.7 | 193.9 ± 79.2 | 190.6 ± 73.4 | 0.627 |
Uric acid (μmol/L) | 488.5 ± 149.5 | 490.2 ± 148.7 | 471.7 ± 157.0 | 0.161 |
Corrected calcium (mmol/L) | 2.1 ± 0.3 | 2.1 ± 0.3 | 2.1 ± 0.3 | 0.290 |
Phosphorus (mmol/L) | 2.0 ± 0.6 | 2.1 ± 0.6 | 2.0 ± 0.5 | 0.196 |
iPTH (pg/mL) | 348.7 (201.7540.2) | 351.8 (204.7539.0) | 333.9 (175.2551.2) | 0.521 |
Albumin (g/L) | 34.7 ± 5.1 | 34.8 ± 5.1 | 33.8 ± 5.7 | 0.016 |
TC (mmol/L) | 4.7 ± 1.4 | 4.7 ± 1.4 | 4.7 ± 1.6 | 0.802 |
TG (mmol/L) | 1.3 (0.9,1.9) | 1.3 (0.9,1.9) | 1.3 (1.0,2.0) | 0.664 |
Hyponatremia n (%) | 105 (6.9) | 87 (6.3) | 18 (12.9) | 0.003 |
Hypokalemia n (%) | 364 (23.8) | 328 (23.6) | 36 (25.7) | 0.578 |
Creatinine (μmol/L) | 793.7 ± 286.9 | 794.8 ± 283.6 | 782.1 ± 318.9 | 0.648 |