Table 4

Proportional hazards model of prognostic factors for relapse-free survival

VariableHazard ratio95% confidence interval2-sided log-rank P
Recurrent disease at study entry1.571.33–1.84<0.0001
Ulceration1.541.32–1.79<0.0001
E16841.341.10–1.620.004
Abnormal LDHa1.261.04–1.530.02
Tumor thickness ≥ 3 mm1.231.04–1.460.02
Age > 49 yrs1.201.04–1.390.01
Primary site = upper limb0.730.59–0.910.005
  • a LDH, lactate dehydrogenase.