Table 3 Perioperative outcomes based on the Wei-DSS.

From: Utility of a novel scoring system for difficulty of pure laparoscopic hepatectomy for intrahepatic cholangiocarcinoma

Variable

Low-difficulty group

(N = 47)

High-difficulty group

(N = 57)

P

Operative time (min)a, b

222.83 ± 119.03

318.14 ± 125.89

<0.001

Intraoperative blood loss (ml)a, b

320.85 ± 420.40

358.77 ± 344.23

0.191

Intraoperative blood transfusion

13(27.7)

34(59.6)

0.001

Utilization of hepatic portal block

17(36.2)

16(28.1)

0.404

Length of postoperative stay (days)b, c

8(3–20)

12(3–41)

0.044

Morbidity of complications

23(48.9)

48(84.2)

<0.001

Clavien-Dindo I-II complication

16(34.0)

40(70.2)

<0.001

Clavien-Dindo III-IV complication

7(14.9)

8(14.0)

> 0.999

PHLF

2(4.3)

6(10.5)

0.289

Bile leakage

4(8.5)

11(19.3)

0.163

Pleural effusion

18(38.3)

34(59.6)

0.048

Pneumonia

7(14.9)

14(24.6)

0.326

R0 resection

45(95.7)

55(96.5)

> 0.999

Lymph node metastasis

8(17.0)

29(50.9)

<0.001

Tumor differentiation, moderate/poor

44(93.6)

57(100.0)

0.178

  1. Data are expressed as frequencies (percentages), otherwise indicated; The chi-squared (χ²) test or Fisher’s exact test is used to compare these data differences between groups.
  2. PHLF, postoperative liver failure.
  3. a. Data are expressed as mean ± standard deviation.
  4. b. The Mann-Whitney U test is used to compare the differences in these data between groups.
  5. c. Data are expressed as median (range).
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