Table 2.

Multivariate Cox regression analysis of the effect of various factors on DSS—effect of the multimarker index (n = 340)

Prognostic factorχ2Risk ratioP
Multimarker index13.331.30<0.001
Clark level9.131.590.003
Ulceration8.631.820.003
Site2.291.350.13
Tumor thickness1.121.160.29
Age0.061.010.80
Sex0.031.040.86