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Fig. 3 | BMC Cancer

Fig. 3

From: Prognostic and predictive significance of tumor length in patients with esophageal squamous cell carcinoma undergoing radical resection

Fig. 3

Scatter plot of tumor length versus Martingale residuals for the entire cohort of 1435 patients. Patients above the horizontal line (zero) were at increased risk for death, and those below were at decreased risk for death compared with the expected risk from Cox proportional hazard regression model. Curved line represents scatterplot smoother. Point at which smoother line cross horizontal line occurs at 4 cm, indicating this would be an ideal cutoff value of tumor length for these patients

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