354123.fig.001a
(a)
354123.fig.001b
(b)
354123.fig.001c
(c)
354123.fig.001d
(d)
Figure 1: Comparison of overall survival of patients according to stage of the disease (a), local recurrence (b), lymph node and/or other site metastasis (c), and DNA content (d). Survival distribution was estimated by the Kaplan-Meier method, and two-sided log-rank tests were performed. The criterion for statistical significance was .