My first question 11 years ago and I still cycle back to it every few years. I have a series of dummy predictor variables. I have a two level DV. I am running logistic regression. What I want to do is determine what variable has the greatest impact on the DV. Because we want to know what predictor changed the DV the most controlling for the others. The dependent variable is overall satisfaction, the predictors are satisfaction with things like pay. Answers to this question tend to say either, relative impact can not be assessed with regression, or standardize your predictors and see which is larger. But a lot of analyst disagree with standardizing dummy variables.