Table 2

Ridge regression coefficients from multivariate Cox regression analysis

VariableHRPLog HR (SE)
Metastatic disease at diagnosis2.020.0130.701 (0.282)
p532.290.0200.829 (0.357)
TrkC0.650.14−0.430 (0.290)
ErbB21.510.210.412 (0.331)
  • NOTE. Model was stratified by radiotherapy status, parameters were estimated by penalized maximum likelihood, with an optimum penalty of 2.95 degrees of freedom chosen by AIC. See Table 1<$REFLINK> for variable definitions.