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.