Additional file 4: Figure S2.

Correlation of OCT4 and BIRC5 to prognosis of HCC patients. (A) Follow-up for HCC patients started on the operation date and ended on August 1, 2010. The median duration of follow-up was 12.67 months (ranging from 1.6 to 34.2 months). During the follow-up period, patients were monitored for tumor recurrence by examination of serum AFP, abdominal ultrasound, chest radiography, computed tomography and/or magnetic resonance imaging; finally patients were also subjected to imaging diagnosis to find recurrent tumors. The disease-free survival (DFS) was defined as the time period from the follow-up start date to the date of tumor recurrence (for the patients with tumor recurrence) or the follow-up end date (for the patients without tumor recurrence), and the overall survival (OS) was defined as the time period from the start date of follow-up to the date of death or the end date of follow-up. Survival curves were calculated by the Kaplan-Meier method, and the significant difference among the three groups was compared using log-rank test. (B) Every two groups were compared and shown in Kaplan-Meier curves.

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Cao et al. BMC Cancer 2013 13:82   doi:10.1186/1471-2407-13-82