why exclude other covariates which covariate is in a cox equation which covariates in the cox regression equation are not significant covariates in cox regression equations why do i need to exclude covariate in cox regression is cate a significant covariate what does the equation wald why exclude covariates in a cox regression how to exclude covariates for cox model why do you exclude covariates in cox regression model is cate significant what type of model is cate in what is the coefficients in cox equation what is the covariate equation for cox regression why is the df kpt coefficient used in the cox regression equation spss remove covariate ________ is a non-significant covariate covariate in spss can you exclude non significant coefficients which is not significant to a cox model