How can I match two samples for comparisons?

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Daniel Wright

There has been a lot written on optimal matching procedures. Good starting points are the two books highlighted on Rosenbaum's web page: http://www-stat.wharton.upenn.edu/~rosenbap/index.html

Gunter Laux

Yes, the so called "Propensity Score Matching" could be an appropriate solution. Please find attached a paper on how it works in R.

Regards!