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st: Forecasting interval and robust estimation

From   "VIVIAND Xavier" <[email protected]>
To   <[email protected]>
Subject   st: Forecasting interval and robust estimation
Date   Tue, 10 May 2005 12:22:16 +0200

Dear StataList,

I would like to get the forecasting interval for a new observation in a study based
on a growth model with repeated data.  When I try to use the option stdf in predict after  :
	reg weight time, robust cluster(id)
I get the message: "stdf not allowed after robust estimation"
Moreover, stdf is not allowed after xtreg.

Does someone know how to calculate this interval ?
Sincerely yours,

Xavier VIVIAND, M.D./

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