Use this field if any of the data sets selected after the first uses an effect variable with another name for the Effect Estimate or Direction Variable.The names for all of the effect variables for the 2nd through the last input data sets must be specified here.For example, to specify the effect variable names for an analysis of three studies where the effect variables in the first, second, and third input data sets are Effect_1, Effect_2, and Effect_3, respectively, complete the following steps: