I have a matched population (1:2) as reported below. I want that the two controls to get the same "rhythm" variable as the matched case instead of missing. Any suggestion to how to program it? caseid event rhythm 1 0 . 1 0 . 1 1 1 2 0 . 2 0 . 2 1 2 3 0 . 3 0 . 3 1 1
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