熟悉psmatch2请戳~

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我就是想知道单用psmatch2做1：1matching，和用xi：psmatch2有神马区别。

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关键词：psmatch2 Match ATCH ATC SMA 神马

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哪怕有点提示也是好滴啊

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难道木有人知道么？？

It seems that psmatch2 does not support factor variables. Some people like to indicate the factor variables in their model, so they use  "xi: psmatch2....". For estimation of propensity score and treatment effects, it seems it does not matter. I have tested it in a small data set and get the same treatment effects. You could try in a complex data sets.

hplcdadong 发表于 2014-8-26 21:52
It seems that psmatch2 does not support factor variables. Some people like to indicate the factor va ...

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