You can stratify the age variable and then do a matching with an extract
restriction on that strata.
Kosuke Imai
Professor, Department of Politics
Center for Statistics and Machine Learning
Princeton University
http://imai.princeton.edu
On Sun, May 14, 2017 at 11:58 PM, Guogen Shan <guogen.shan(a)unlv.edu> wrote:
Dear Prof. Imai,
Thanks for developing the MatchIt package. I have a data set from a
treatment, and I want to match it with another data base (control), by age,
race, education. Age is the primary match criteria, followed by race, and
education. In other words, I want to give more weights to the age
difference than those to race difference. Any suggestion how to use your
package for this type of matching?
Thank you.
Guogen