Re: [R] Matching package - Match function

2011-03-26 Thread sunny
I have figured out the solution to this. It appears that distance isn't defined as the difference in propensity scores. Instead, this difference is then scaled by the standard deviation of the predicted dependent-variable values of the corresponding logistic regression, and then squared.

[R] Matching package - Match function

2011-03-25 Thread sunny
Hi. I am using the Matching package for propensity score matching. For each treated unit, I want to find all control units whose propensity scores lie within a certain distance from the treated unit. The sample code is as follows: library(Matching) x - rnorm(10) y - rnorm(10) z -