The effectiveness of transarterial chemoembolization in recurrent hepatocellular-cholangiocarcinoma after resection.

For the multivariable Cox proportional-hazard regression model, we included factors that were significant or that showed a trend toward significance ( P < 0.1) in a univariable model and performed backward elimination ( P < 0.05) using the “standard method” of removing the variable with the largest P -value.

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