how to do i get psmatched ID by using proc psmatch?

RayChoo — Tue, 12 Jul 2022 09:16:26 GMT

Hello, I'm in work of doing propensity score matching and got a problem.

I'm using 'proc psmatch' and the code that i made is like below.

proc psmatch data=ps11 region=cs;
class voluntary;
psmodel voluntary=lag_block lag_for lag_size lag_lev lag_sales_grw lag_roa lag_boardsize lag_board_ind lag_audit_comm_size;
match method=optimal(k=1) distance=lps caliper=0.25;
output out(obs=all)=psmatch matchid=_matchid ps=propensity_scores lps=logit_propensity_scores;
run;

Running with the above code i don't get any matched id.

Also, the message of 'ERROR: A feasible optimal fixed ratio matching that has the specified parameters does not exist.' keep comes up.

Does anyone who knows what is the problem and can fix it please?

Sincerely.

topic how to do i get psmatched ID by using proc psmatch? in Statistical Procedures

how to do i get psmatched ID by using proc psmatch?