Hello,
For each of 27 treated units, I am trying to identify good control units out of a pool of 482 control units to conduct a proactive quasi-experiment. I have about a dozen variables I'd like to use to find matches for each treated unit. I was considering using nearest neighbor matching and also caliper matching if I can find a way to set a different caliper for each matching variable. Otherwise I just plan to manually evaluate the quality of the nearest neighbor matches based on calipers for each variable. I looked into a way to identify nearest neighbors based simply on their difference on each of these variables to the treated unit and didn't find anything. I figured I could just create difference scores for each variable, but couldn't think of the code to use to rank the control units on the magnitude of their differences across the 12 variables to the treated unit. Does anyone know a package or can help me out with the code to rank how dissimilar control units are to a treated unit on multiple variables? Thank you very much for your time.
For each of 27 treated units, I am trying to identify good control units out of a pool of 482 control units to conduct a proactive quasi-experiment. I have about a dozen variables I'd like to use to find matches for each treated unit. I was considering using nearest neighbor matching and also caliper matching if I can find a way to set a different caliper for each matching variable. Otherwise I just plan to manually evaluate the quality of the nearest neighbor matches based on calipers for each variable. I looked into a way to identify nearest neighbors based simply on their difference on each of these variables to the treated unit and didn't find anything. I figured I could just create difference scores for each variable, but couldn't think of the code to use to rank the control units on the magnitude of their differences across the 12 variables to the treated unit. Does anyone know a package or can help me out with the code to rank how dissimilar control units are to a treated unit on multiple variables? Thank you very much for your time.
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