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Table 2 Univariate and multivariate analysis of 57 patients for risk factors related to overall survival

From: Right-side versus left-side hepatectomy for the treatment of hilar cholangiocarcinoma: a comparative study

 Univariate analysisMultivariate analysis
OR (95% CI)P valueOR (95% CI)P value
Clinical variables
 Preoperative jaundice0.90 (0.42–1.91)0.784  
 Preoperative biliary drainage0.46 (0.16–1.36)0.166  
 Portal vein embolization0.63 (0.15–2.68)0.537  
 Bismuth type IV1.29 (0.59–2.83)0.520  
 ICG R-15 (≥ 15%)1.46 (0.65–3.27)0.350  
Operative variables
 Operation (LH)0.76 (0.34–1.66)0.491  
 R1 resection1.56 (0.68–3.58)0.294  
 Portal vein resection0.77 (0.29–2.06)0.615  
 Transfusion3.48 (1.60–7.54)0.0023.12 (1.42–6.87)0.005
 PHLF (≥ grade B)4.45 (1.83–10.82)0.0014.62 (1.86–11.49)0.001
 Complication (≥ IIIA)1.34 (0.62–2.87)0.451  
Pathologic variables
 Differentiation (poorly)1.38 (0.45–4.20)0.571  
 Lymphovascular invasion2.02 (0.90–4.54)0.0871.17 (0.45–3.04)0.734
 T stage (≥ T3)1.24 (0.55–2.76)0.596  
 N stage (≥ N1)2.18 (1.01–4.71)0.0461.40 (0.54–3.65)0.486
  1. Abbreviations: ICG R-15 indocyanine green retention rate at 15 minutes, LH left-side hepatectomy, PHLF post-hepatectomy liver failure, OR odds ratio, CI confidence interval