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Re: st: How to extract matched sample in psmatch2
From
daniel klein <[email protected]>
To
[email protected]
Subject
Re: st: How to extract matched sample in psmatch2
Date
Sun, 30 Oct 2011 22:51:02 +0100
Kenneth, please say where user-written commands come from. You are
using -psmatch2- (from SSC). This is a package and it includes,
besides -psmatch2-, the programs -pstest- and -psgraph-, as can be
seen by typing
. ssc d psmatch2
or under "Also see" in the help file for -psmatch2-
I guess -pstest- is what you are looking for.
You can answer your question
"[...] With a dichotomous grouping variable, why did Stata use probit
instead of logit which I thought was the default. [..]"
reading the help file for -psmatch2-, that states
"Options: Estimation of the propensity score
[...]
logit use logit instead of the default probit to estimate the
propensity score."
I do not understand what you mean by ".. this kind of model" when you say
"[...] state and region. They are nominal variables and so don't
really belong in this kind of model."
but I have not been working with propensity score matching a lot, so
someone else might have advice. Also note the paragraph "Matching
within strata" in the help file.
Best
Daniel
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