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The variables Im interested in come from interview, examination and laboratory components. How do I combine them together?

April 26, 2017components interview laboratory variables

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The variables Im interested in come from interview, examination and laboratory components. How do I combine them together?

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If you want to join variables from different components, you need to merge these data files. The first step in merging data is to sort each of the data files by a unique identifier. Then you merge the data by that unique identifier.