st: Use of statsby in var command

[J�rn van Halteren <halteren@corporate-finance-mannheim.de>]

The STATA manual says that vector autoregression (var) works with the
command "statsby". However, I always get the error r(451) "repeated time
values in sample an error occurred when statsby executed var". If I run the
command with simple by it works, but I need the stats.

Can someone help me?

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