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st: xtset question

From   "Sharif S. Aly" <[email protected]>
To   [email protected]
Subject   st: xtset question
Date   Tue, 29 Jan 2008 12:50:39 -0800

Dear list,
xtset will not allow declaring more than 2 variables, a panel and a time variable, the latter has to be understandably not repeated within a panel. What if there is more than 1 panel variable with repeated time values within any 1 of those panels but not within all panels. In my example, a 4 level mixed effects negative binomial model (hence I needed to xtset my dataset to use xtnbreg) with time as the lowest factor level.
Any solutions are greatly appreciated?

Best regards,

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