Table 5

Cox proportional hazard model correlation to disease recurrence

CovariateaParameter estimateStandard errorWald testConditional risk ratio
Gender (0 = female; 1 = male)0.520.53P = 0.3301.68
Age (0 = <60; 1 = ≥60)−.200.52P = 0.6910.81
AJCC Stage (0 = stages I & II; 1 = stages III & IV)1.451.07P = 0.1744.28
Marker positive (0 = 0–2; 1 = 3–4)1.240.54P = 0.0223.44
  • a Cox proportional hazard regression model included gender, age, AJCC stage, and number of markers positive. Current AJCC staging incorporates Breslow thickness of primary, node status, and distant metastasis status.