a step-down multivariate analysis using the cox regression model revealed four risk factors as being highly significant for predicting a more favorable survival outcome : ( 1 ) thinner breslow thickness ( p = 0.0001 ) , ( 2 ) pathologic stage i disease ( p = 0.004 ) , ( 3 ) no clinical ulceration ( p = 0.0004 ) , and ( 4 ) being a woman younger than 50 years of age ( p = 0.029 ) .
C0030660
pathologic
C0041582
ulceration