Fig. 1From: Prognostic and predictive factors for Taiwanese patients with advanced biliary tract cancer undergoing frontline chemotherapy with gemcitabine and cisplatin: a real-world experienceThe Kaplan-Meier survival curves of PFS (a, c, e) and OS (b, d, f) for patients, stratified according to independent prognostic factors, NLR (A, B), biliary drainage (c, d) and tumor responses (e, f). PFS, progression-free survival; OS, overall survival; NLR, neutrophil to lymphocyte ratio; PTCD, percutaneous transhepatic cholangiography drainage; CR, complete response; PD, partial response; SD, stable disease, PD progressive disease; N/A, not assessedBack to article page