Dear all,
I work with Ben Jann's kmatch ado and got a question concerning the common support graphs. Basically I do not understand what his graph is supposed to show in contrast to the ones I know from other ados or researchers. Consider the testing code below:
I am used to common support diagnostics like this here: https://www.statalist.org/forums/fil...43&type=medium
You see there are two groups, treatment and control. I do not get why in kmatch the groups are called total, unmatched and matched. I create my own version called "myown". You see, this clearly deviates from "regular". Basically, I do not understand how "regular" is a common support graph and how it should be interpreted.
I work with Ben Jann's kmatch ado and got a question concerning the common support graphs. Basically I do not understand what his graph is supposed to show in contrast to the ones I know from other ados or researchers. Consider the testing code below:
Code:
ssc install kmatch ssc install moremata ssc install kdens version 15 sysuse nlsw88, clear kmatch ps union c.ttl_exp i.south c.grade (wage), gen(diag) kmatch cdensity, name(regular, replace) //regular Command in kmatch twoway (kdensity _KM_ps if diag == 0) (kdensity _KM_ps if diag == 1), name(myown, replace) //own version graph combine regular myown
You see there are two groups, treatment and control. I do not get why in kmatch the groups are called total, unmatched and matched. I create my own version called "myown". You see, this clearly deviates from "regular". Basically, I do not understand how "regular" is a common support graph and how it should be interpreted.
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