Frequently Asked Questions for Synth
|Synth for Stata
1. The code stops with an error message.
What should I do?
Most problems can be solved by exactly
repeating the following steps:
a) close your Stata and reopen it
b) type: "update
all" (and if asked "update
swap" to fully install newly
net install synth, all replace
In most cases the code
should run now.
2. When installing the program using net
install I get the following error message:
Could not load plugin:
(error occurred while loading synth.ado)
This means that a plugin is not availbale
for your platform (see here details). In this case you can download the C
code to compile the plugin on your
3. How can I improve the fit for the
Use the "nested" and the "nested allopt"
option. Also try to add more pre-treatment
years of the ouctome variable. Finally,
trim the donor pool to units that are
sufficiently close to the treated unit.
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