kmr: A command to correct survey weights for unit nonresponse using groups' response rates

In this article, we describe kmr, a command to estimate a microcompliance function using groups' nonresponse rates (Korinek, Mistiaen, and Ravallion, 2007, Journal of Econometrics 136: 213{235), which can be used to correct survey weights for unit nonresponse. We illustrate the use of kmr with an empirical example using the current population survey and state-level nonresponse rates.