Study ID Drug1 Drug2 Drug3 00001 1 0 0 00001 0 0 1 Hello, I just started using SAS again and I have yet to refresh my memory. I'm currently investigating 3 drugs - patients are only supposed to be prescribed to only 1 drug. However, some patients received more than 1 drug (as depicted in the table above) and I want to delete these specific individuals from the data. Any codes to identify and delete these individuals? Any advice/help would be appreciated.
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