Multivariate analyses for overall survival in an unselected cohort with metastatic colorectal cancer.

HR = hazard ratio, TMA = tissue micro array; PS = performance status, ALP = alkaline phosphatase, UNL; Upper normal limit. For the multivariate survival analysis, backward stepwise selection of covariates excluding the most non-significant variable at each step according to the likelihood ratio test was usedMultivariate analyses for overall survival in an unselected cohort with metastatic colorectal cancer.