Hi, I have been using the SynthDiD package in STATA developed by Daniel PV Damian Clarke to analyze a strictly balanced yearly panel data set ranging from 2017 to 2022. The panel is well balanced, with no missing observations for all cross-sectional units over the entire period.
My dataset includes one treatment unit and 851 unique control units.
When running the following command, I am encountering a conformability error whenever I try to specify the number of placebo replications (rep) greater than 24:
sdid publications codes year treated, vce(placebo) reps(50) seed(123) graph g1on
The error message is:
Placebo replications (50).
This may take some time.
----+--- 1 ---+--- 2 ---+--- 3 ---+--- 4 ---+--- 5
......................... <istmt>: 3200 conformability error
Could anyone provide insights as to why this might be occurring? Is there a known limitation for the number of placebo replications in the SynthDiD package, or could this be an issue specific to my data or my STATA version (17)? Any help or advice would be greatly appreciated.
My dataset includes one treatment unit and 851 unique control units.
When running the following command, I am encountering a conformability error whenever I try to specify the number of placebo replications (rep) greater than 24:
sdid publications codes year treated, vce(placebo) reps(50) seed(123) graph g1on
The error message is:
Placebo replications (50).
This may take some time.
----+--- 1 ---+--- 2 ---+--- 3 ---+--- 4 ---+--- 5
......................... <istmt>: 3200 conformability error
Could anyone provide insights as to why this might be occurring? Is there a known limitation for the number of placebo replications in the SynthDiD package, or could this be an issue specific to my data or my STATA version (17)? Any help or advice would be greatly appreciated.
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