Table 5

Proportional hazards model of prognostic factors for overall survival

VariableHazard ratio95% confidence interval2-sided log-rank P
Ulceration1.731.45–2.05<0.0001
E16841.711.39–2.11<0.0001
Recurrent disease at study entry1.481.25–1.76<0.0001
Age > 49 yrs1.281.09–1.510.003