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Table 1 Study population and baseline clinical characteristics before and after PSM

From: Efficacy of laparoscopic repeat hepatectomy compared with open repeat hepatectomy: a single-center, propensity score matching study

  Before propensity score matching After propensity score matching
LRH (n = 48) ORH (n = 31) P-value LRH (n = 17) ORH (n = 17) P-value
Gender ratio (M:F) 43:5 28:3 0.92 16:1 16:1 1.0
Age, years 63 (55−68) 61 (57−68) 0.25 62.2 ± 9.8 61.3 ± 9.6 0.83
BMI 22.5 ± 3.3 23.8 ± 3.2 0.08 23.2 ± 4.1 23.4 ± 3.6 0.90
HBV 30 (62.5) 27 (87.1) 0.02 12 (70.6) 13 (76.5) 0.70
Liver cirrhosis 22 (45.8) 19 (61.3) 0.18 8 (47.1) 9 (52.9) 0.73
Previous hepatectomy    0.11    0.09
 Laparoscopic 29 (62.5) 13 (41.9)   11 (64.7) 6 (35.3)  
 Open 19 (37.5) 18 (58.1)   6 (35.3) 11 (64.7)  
Child–Pugh grade    0.85    0.63
 A 41 (85.4) 26 (83.9)   14 (82.4) 15 (88.2)  
 B 7 (14.6) 5 (16.1)   3 (17.6) 2 (11.8)  
ASA score    0.19    0.70
 II 40 (83.3) 22 (71.0)   13 (76.5) 12 (70.6)  
 III 8 (16.7) 9 (29.0)   4 (23.5) 5 (29.4)  
Preoperative laboratory results
 TBil in mg/dL 13.7 (9.8−18.6) 14.3 (9.7−21.5) 0.93 15.0 ± 6.7 13.1 ± 6.3 0.44
 Alb in g/L 40.3 ± 4.3 39.1 ± 6.3 0.31 40.0 ± 3.9 40.2 ± 5.4 0.89
 PT in seconds 13.4 (13.0−15.2) 13.8 (13.1−14.6) 0.58 14.0 ± 1.5 13.7 ± 1.5 0.63
 PLT/mm3 × 103 124.0 (90.3−146.8) 129.0 (87.0−158.0) 0.93 130.1 ± 52.3 145.7 ± 59.2 0.60
  1. BMI body mass index, TBil total bilirubin, Alb albumin, PT prothrombin time, PLT platelet, PSM propensity score matching, LRH laparoscopic repeat hepatectomy, ORH open repeat hepatectomy, ASA American Society of Anesthesiologists, M male, F female, HBV hepatitis virus B