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Table 2 Stent insertion outcome

From: Endoscopic stenting for hilar cholangiocarcinoma: efficacy of unilateral and bilateral placement of plastic and metal stents in a retrospective review of 480 patients

    Plastic    Metal    P
   n TS FS n TS FS TS FS
  n 115 110 110 99 99 99   
Group 1 ITT (%)   (95.7) (95.7)   (100) (100) 0.036 0.036
  PP (%)    (100)    (100)   -
  n 67 59 59 78 77 77   
Group 2 ITT (%)   (88.1) (88.1)   (98.7) (98.7) 0.008 0.008
  PP (%)    (100)    (100)   -
  n 49 35 27 72 70 68   
Group 3 ITT (%)   (71.4) (55.1)   (97.2) (94.4) <0.001 <0.001
  PP (%)    (77.1)    (97.1)   0.001
  n 231 204 196 249 246 244   
Total ITT (%)   (88.3) (84.8)   (98.8) (97.9) <0.001 <0.001
  PP (%)    (96.1)    (99.2)   0.026
  1. ITT, intention-to-treat; PP, per protocol; TS, technical success; FS, functional success; Group 1, patients with Bismuth type I malignant strictures; Group 2, patients with Bismuth type II malignant strictures; Group 3, patients with Bismuth type III and IV malignant strictures.