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Table 3 Multivariate analysis of clinicopathologic factors associated with disease-free survival

From: Adjuvant concurrent chemoradiation therapy (CCRT) alone versus CCRT followed by adjuvant chemotherapy: Which is better in patients with radically resected extrahepatic biliary tract cancer?: a non-randomized, single center study

Variable P value Hazard ratio 95% CI
CA 19-9
(≤ 60 U/mL versus 60 > U/mL)
< 0.01 0.434 0.256 - 0.735
N stage 0.17 1.430 0.862 - 2.374
Histologic grade
(WD/MD versus PD)
0.01 0.345 0.162 - 0.733
CCRT alone versus
CCRT followed by adjuvant chemotherapy
0.01 0.429 0.239 - 0.770
  1. WD, well differentiated; MD, moderate differentiated; PD, poor differentiated;
  2. CCRT, concurrent chemoradiation therapy; CI, confidence interval.