st: trend specification in VEC

["kashif saeed" <mmks_ku@hotmail.com>]

Dear all!

I know Stata uses Johansen's five trend specifications in finding 
cointegrating rank of a VECM. However I do not know how exactly each command 
 (trend, rtrend, constant, rconstant, none) corresponds to Johansen's 
specifications. Please help me in this regard.

Thanks in advance.

Kashif Saeed.

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