I am doing a linear regression analysis in R with logarithmic dependent variable. One of the control variables is categorical and describes an industry. There are 6 industries and thereby R automatically creates a separate coefficient for each Industry. However, I just want to see if that variable is significant or not and am not interested in separate coefficient for each factor.
Is there a way to program it in a way that the summary of the model just says if the influence of industry was significant for at least one factor or not?