雪狼CC 发表于 2016-11-3 16:39 
要确保已经更新至最新
ssc install ivreg2, replace
ssc install ivreg28, replace
您好，按照您的操作我试了一遍，可是这些都安装不上怎么办呢，下面是stata出现的代码
. ssc install ivreg2, replace
checking ivreg2 consistency and verifying not already installed...
installing into c:\ado\plus\...
installation complete.
.
. ssc install ivreg28, replace
checking ivreg28 consistency and verifying not already installed...
all files already exist and are up to date.
.
. ssc install ivreg29, replace
checking ivreg29 consistency and verifying not already installed...
all files already exist and are up to date.
.
. ssc install xtivreg2, replace
checking xtivreg2 consistency and verifying not already installed...
all files already exist and are up to date.
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