using psgraph as postestimation command for psmatch2

[Michael Andersonnnn]

Hi All,

I am hoping someone can help me.
I am using psgraph to plot a histogram following psmatch2 to assess for covariate balance
However I would like to compare the histogram before and after matching to show graphically the impact of the matching process.

My code is as follows:



psmatch2 ind alter sex i.volq i.charlindex i.imddecile , outcome(readmission) neighbor (1) caliper (0.001) ate common

pstest

psgraph

Does anyone have any suggestions?
Thank you in advance!

[Fei Wang]

psmatch2 ind alter sex i.volq i.charlindex i.imddecile , outcome(readmission) neighbor (1) caliper (0.001) ate common
pstest, both graph  // bias before and after matching
pstest, both scatter  // bias and variance ratio before and after matching

[Michael Andersonnnn]

thank you, that's helpful, but I can't seem to find the option that would show a graph for the propensity score matching before and after. I've got after using psgraph, as attached.
However pstest graph or pstest hist, is just showing the proportion of variance

[Fei Wang]

It seems -psmatch2- cannot automatically generate the graph you needed. You may turn to another command -teffects psmatch-. After implementing matching with -teffects psmatch-, you may use -tebalance density- to generate distributions of p-scores of the two groups, before and after matching. The only difference is that they are lines of density, not bars as in #3. Below is an example.

[Sattar Khan]

psmatch2 ind alter sex i.volq i.charlindex i.imddecile , outcome(readmission) neighbor (1) caliper (0.001) ate common
pstest, both graph // bias before and after matching
pstest, both scatter // bias and variance ratio before and after matching

Dear Fei, Kindly give us the procedure that how to match sample on a specific variable or variables?
Warms regard