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Table 1 Demographics and clinical characteristics of recipients and donors

From: Incidence and risk factors for high-level BK viruria: a single center study in China

Variates All recipients n = 262 Group A n = 35 Group B n = 227 \(\chi^{2} or t\) \(value\) P value
Donors
 Sex (n, %)
  Male 197, 75.2% 28.80% 169, 74.4% 0.501 0.479
  Female 65, 24.8% 7.20% 58, 25.6%   
 Age (n, %)
  < 18 27, 10.3% 3, 8.6% 24, 10.6% 0.618 0.734
  18–59 232, 88.5% 32, 91.4% 200, 88.1%   
  ≥ 60 3, 1.1% 3, 1.3%   
 BMI (n, %)
  < 18 kg/m2 27, 10.3% 3, 8.6% 24, 10.6% 0.873 0.832
  18–23.9 kg/m2 161, 61.5% 24, 68.6% 137, 60.4%   
  24–27.9 kg/m2 64, 24.4% 7.20% 57, 25.1%   
  ≥ 28 kg/m2 10, 3.8% 1, 2.9% 9, 4.0%   
 Donor type (n, %)
  Live 40, 15.3% 4, 11.4% 36, 15.9% 21.7 < 0.001
  Brain death 12, 4.6% 1, 2.9% 11, 4.8%   
  Cardiac death 138, 52.7% 9, 25.7% 129, 56.8%   
  Brain-cardiac death 72, 27.5% 21, 60.0% 51, 22.5%   
Serum creatinine (mean ± SD) 93.2 ± 54.2 μmol/L 94.5 ± 65.2 μmol/L 93.0 ± 52.5 μmol/L − 0.152 0.880
 Left or right kidney
  Left 141, 53.8% 19, 54.3% 122, 53.7% 0.004 0.952
  Right 121, 46.2% 16, 45.7% 105, 46.3%   
Recipients
 Sex (n, %)
  Male 189, 72.1% 22, 62.9% 167, 73.6% 1.731 0.188
  Female 73, 27.9% 13, 37.1% 60, 26.4%   
 Age (n, %)
  < 18 2, 0.8% 2, 0.9% 0.365 0.833
  18–59 254, 96.9% 34, 97.1% 220, 96.9%   
  ≥ 60 6, 2.3% 1, 2.9% 5, 2.2%   
 BMI (n, %)
  < 18 kg/m2 36, 13.7% 3, 8.6% 33, 14.5% 3.026 0.388
  18–23.9 kg/m2 187, 7 1.4% 28.80% 159, 70.0%   
  24–27.9 kg/m2 36, 13.7% 3, 8.6% 33, 14.5%   
  ≥ 28 kg/m2 3, 1.1% 1, 2.9% 2, 0.9%   
 Dialysis (n, %)
  Hemodialysis 209, 79.8% 25, 71.4% 184, 81.0% 2.382 0.304
  Peritoneal 51, 19.5% 10, 28.6% 41, 18.1%   
  Others 2, 0.8% 2, 0.9%   
 ATG/ATG-F (n, %)
  No 176, 67.2% 18, 51.4% 158, 69.6% 4.543 0.033
  Yes 86, 32.8% 17, 48.6% 69, 30.4%   
 AR (n, %)
  No 217, 82.8% 23, 65.7% 194, 85.5% 8.313 0.004
  Yes 45, 17.2% 12, 34.3% 33, 14.5%   
 DGF (n, %)
  No 215, 82.1% 19, 54.3% 196, 86.3% 21.170 < 0.001
  Yes 47, 17.9% 16, 45.7% 31, 13.7%   
 Infection within 30 days after surgery (n, %)
  Pulmonary infection 14, 5.3% 3, 8.6% 11, 4.9% 3.936 0.140
  Urinary tract infection 14, 5.3% 4, 11.4% 10, 4.4%   
  Others 233, 88.9% 28.80% 205, 90.7%   
Immune factors
 Immunosuppressive maintenance regimen (n, %)
  TAC + MMF + Preda 259, 98.9% 34, 97.1% 225, 99.1% 1.046 0.306
  Others 3, 1.1% 1, 2.9% 2, 0.9%   
 Number of kidney transplants (n, %)
  First 258, 98.5% 35, 100% 222, 98.2% 0.626 0.731
  Second 4, 1.5% 4, 1.8%   
  HLA mismatching(mean ± SD) 2.0 ± 1.1 1.9 ± 1.2 2.0 ± 1.0 0.745 0.457
  Cold ischemia time (mean ± SD) 10.2 ± 4.7 h 9.8 ± 4.2 h 10.3 ± 4.8 h 0.555 0.576
  Warm ischemia time (mean ± SD) 4.5 ± 1.3 min 4.8 ± 1.2 min 4.5 ± 1.3 min − 1.466 0.149
  1. These all main data we collected were included into this table, and the corresponding chi-square/t values and P-values are contained in the last two columns of the table
  2. aTacrolimus + mycophenolate mofetil + prednisone (Tac + MMF + Pred)
  3. (This table was relevant to Results.)