Figure 2.

The follow-up data was analyzed by the Kaplan-Meier method and log-rank test. The survival curves were made. Figure 2A: Schematic representation shows survival curves of lymph node metastatic group and non-metastatic group in patients with ESCC. Figure 2B: Schematic representation shows survival curves of different protein level groups in patients with ESCC. Figure 2C: Schematic representation shows survival curves of different sexes in patients with ESCC. Figure 2D: Schematic representation shows survival curves of different ages in patients with ESCC. Log-rank test indicated that there were significant differences in survival curves between lymph node metastatic group and non-metastatic group (χ2 = 19.484, P = 0.000, Figure 2A), and among groups of HAX-1 protein expression +, ++ and +++ (χ2 = 80.729, P = 0.000, Figure 2B); but no significant differences between male patients and female patients (χ2 = 2.435, P = 0.119, Figure 2C), and between ≥60 years old patients and <60 years old patients (χ2 = 0.143, P = 0.705, Figure 2D).

Li et al. Diagnostic Pathology 2013 8:47   doi:10.1186/1746-1596-8-47
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