Figure 4From: Development and validation of MIX: comprehensive free software for meta-analysis of causal research data Creation of a data set with the MIX program. Data sets can be created from Excel files, Comma Separated Value (CSV) files, or via manual input. Once the data prepared on a spreadsheet within the program, the user can select the cell ranges that correspond to the relevant variables and load the data for analysis with a simple click.Back to article page