The LSMeans Differences Data Set can be created using the Difference Chooser process. Both an Effect variable and variables to specify the levels of the Effects that you want to calculate differences between are required. A variable named Reverse is also required if you would like to reverse the direction of the LSMeans difference.Important : The LSMean parameters settings ( LSMeans Effects , LSMeans Difference Set , LSMeans Control Levels ) that were used to create this data set in Difference Chooser must match the LSMean parameter settings in this process.You can launch the Difference Chooser process with the EDDS, LSMeans effects, and output data set already specified by clicking .