Jasjeet’s R package for matching in observational studies

Jasjeet Sekhon reports:

I recently released a new version of my Matching package for R. The new version has a function, called GenMatch(), which finds optimal balance using multivariate matching where a genetic search algorithm determines the weight each covariate is given. The function never consults the outcome and is able to find amazingly good balance in datasets where human researchers have failed to do so. I’m writing a paper on this algorithm right now.

The software, along with some examples, is here.

We also had a discussion of matching a few months ago on the blog.