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Table 3 Postoperative results before and after propensity score matching (PSM)

From: Minimally invasive versus open right hepatectomy: comparative study with propensity score matching analysis

Variable ORH
N = 131
MIRH
N = 47
P ORH after PSM
N = 60
MIRH after PSM
N = 37
P
Hospital stay (days)
Median (interquartile range)
9 [7–15] 7 [6–12.75] 0.15 9 [6–14.25] 7 [6–11] 0.09
Reoperation (%) 4 (3.1%) 0 (0%) 0.57 3 (5%) 0 (0%) 0.28
Rehospitalization (%) 15 (11.5%) 4 (8.5%) 0.78 4 (7.7%) 4 (11.8%) 0.71
Overall morbidity (%) 71 (54.2%) 20 (42.6%) 0.17 32 (53.3%) 13 (35.1%) 0.09
Dindo-Clavien (%)       
 I–II 44 (33.6%) 9 (19.1%) 0.07 21 (35%) 5 (13.5%) 0.03
 III–IV 13 (9.9%) 11 (23.4%) 0.03 5 (8.3%) 8 (21.6%) 0.07
Perioperative mortality (%) 14 (10.7%) 0 (0%) 0.02 6 (10%) 0 (0%) 0.08
Liver-related complications       
 Hemorrhage (%) 4 (3.1%) 1 (2.1%) 1 1 (1.7%) 1 (2.7%) 1
 Biliary fistula (%) 17 (13%) 5 (10.6%) 0.80 8 (13.3%) 5 (13.5%) 1
 Ascites (%) 16 (12.2%) 4 (8.5%) 0.60 9 (15%) 2 (5.4%) 0.20
 Encephalopathy (%) 4 (3.1%) 1 (2.1%) 1 3 (5%) 0 (0%) 0.28
Size of largest lesion (mm)
Median (interquartile range)
41.5 [22–80] 51.5 [25.75–75.75] 0.35 50 [22–102.5] 55 [25–78] 0.69
Surgical margins (%)
Free
115 (87.8%) 40 (85.1%) 0.62 55 (91.7%) 34 (91.9%) 1
Margin width (mm)
Median (interquartile range)
5 [1–9.5] 15 [5–77.5] 0.0002 5 [2–9.5] 10 [5–25] 0.03
  1. Values with statistical significance (P < 0.05)
  2. ORH open right hepatectomy, MIRH minimally invasive right hepatectomy
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