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Table 3 Comparisons of demographic data and clinical features of surgical volume periods in liver transplantation patients

From: Association between surgical volumes and hospital mortality in patients: a living donor liver transplantation single center experience

Demographic and clinical features Annual surgical volumes < 30 (n = 74) Annual surgical volumes ≥ 30 (n = 389) p
Mean ± SD (range) Mean ± SD (range)
Recipient age (years) 51.88 ± 9.33 (11–70) 54.37 ± 8.48 (18–73) 0.023
Donor age (years) 29.22 ± 8.13 (18.0–54.00) 31.80 ± 9.34 (18.0–65.00) 0.026
MELD score 17.32 ± 8.95 (6.0–40.0) 17.68 ± 9.43 (3.0–40.0) 0.661
Total bilirubin (mg/dL) 6.01 ± 9.10 (0.19–47.69) 7.01 ± 9.72 (0.32–37.94) 0.387
Creatinine (mg/dL) 1.13 ± 0.81 (0.38–4.90) 1.20 ± 0.99 (0.32–8.65) 0.764
INR 1.57 ± 0.71 (0.92–4.59) 1.54 ± 0.62 (0.87–4.76) 0.678
GRWR 1.15 ± 0.31 (0.65–2.16) 1.08 ± 0.30 (0.55–2.28) 0.105
Blood loss (ml) 6143.92 ± 5202.98
(200.0–23,000.0)
3242.82 ± 3661.38
(200.0–40,000.0)
< 0.001
Operative time (min) 474.51 ± 91.78 (290.00–730.00) 398.26 ± 90.24 (215.00–885.00) < 0.001
APACHE II score 17.55 ± 7.00 (5.00–29.00) 18.46 ± 7.24 (3.00–37.00) 0.318
Intensive care unit (days) 15.23 ± 10.03(4.0–58.00) 9.63 ± 9.64 (1.00–114.00) < 0.001
Length of stay (days) 35.55 ± 17.38 (14.00–119.00) 29.89 ± 17.38 (3.00–159.00) 0.011
  (%) (%)  
Gender 0.081
 Male 52 (70.3) 309 (79.4)  
 Female 22 (29.7) 80 (20.6)  
Pre-LT renal failure 0.633
 Yes 3 (4.1) 21 (5.4)  
 No 71 (95.9) 368 (94.6)  
Pre-LT in intensive care unit 0.237
 Yes 3 (4.1) 31 (8.0)  
 No 71 (95.9) 358 (92.0)  
ABO incompatible  < 0.001
 Yes 0 (0.0) 54 (13.9)  
 No 74 (100.0) 335 (86.1)  
Dialysis 0.060
 Yes 13 (17.6) 39 (10.0)  
 No 61 (82.4) 350 (90.0)  
Re-operation < 0.001
 Yes 29 (39.2) 71 (18.3)  
 No 45 (60.8) 318 (81.7)  
Biliary complication 0.160
 Yes 12 (16.2) 41 (10.5)  
 No 62 (83.8) 348 (89.5)  
Hepatic artery complication 0.849
 Yes 3 (4.1) 14 (3.6)  
 No 71 (95.9) 375 (96.4)  
Portal vein complication 0.366
 Yes 0 (0.0) 8(2.1)  
 No 74 (100.0) 381 (97.9)  
Early allograft dysfunction 0.376
 Yes 0 (0.0) 10 (2.6)  
 No 74 (100.0) 379 (97.4)  
Cardiovascular complication 0.161
 Yes 3 (4.1) 6 (1.5)  
 No 71 (95.9) 383 (98.5)  
Cerebrovascular complication 1.000
 Yes 1 (1.4) 6 (1.5)  
 No 73 (98.6) 383 (98.5)  
Pulmonary complication 0.183
 Yes 12 (16.2) 42 (10.8)  
 No 62 (83.8) 347 (89.2)  
Hemorrhage 0.099
 Yes 13 (17.6) 42 (10.8)  
 No 61 (82.4) 347 (89.2)  
Infection 0.187
 Yes 28 (37.8) 117 (30.1)  
 No 46 (62.2) 272 (69.9)  
Hospital mortality 0.030
 Yes 9 (12.2) 21 (5.4)  
 No 65 (87.8) 368 (94.6)  
  1. Model for end-stage liver disease (MELD) score, international normalized ratio (INR), graft-recipient weight ratio (GRWR), liver transplantation (LT)