Significance Level for Retaining Variables Use this option to specify a p-value threshold. If the significance test for a variable already in the model drops below this threshold, it is dropped from the model. 0.01 is specified by default. To Specify a New Significance Level: Choose Automated as the Mode for generating the model. Choose Stepwise as the Variable Selection Method . Highlight the existing significance level in the text field and type in the new significance level.