Factors that were significant in univariate analysis and factors that showed a trend towards significance were included in the multivariate model evaluating the factors potentially influencing OS (ie, sites of metastases, primary tumor localization, pretreatment CEA level, PS score, and performance status).
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Overexpression of epidermal growth factor receptor as a prognostic factor in colorectal cancer on the basis of the Allred scoring system.
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