Converting match matrix results to single column group?
by McDonald, Robert J., M.D., Ph.D.
I wish to perform conditional logistic regression on the results of 1:1 matching (eventually 1:N) from MatchIt to both assess the improvement in covariate balance and to analyze outcomes. Is there any way, using R, to append the match.matrix to the matched dataset as a new column that represents matched pair group numbers (where each grouping represents the two members of the pair? I plan to use this as a means to perform the conditional logistic regression, conditioned on the matched pair group number.
Thanks for your help,
Bob