Re: st: "insufficient observations" with xtreg

[Kay Walker <kay.walker@internode.on.net>]

If you only have 2 years, that's not enough. The time intervals have to 
either be more frequent or you need more years to perform it this way. I 
assume you have x1 at start, 1 year and 2 years; x2 at the same 
intervals etc. ie. only 2 observations per x after baseline.

Cheers
-----
Natalie Trapp wrote:
> Dear all,
>
> this question has already been posed four years ago by Liu Ying on 
> statalist, but I couldn't find an answer to it.
>
> I declared the dataset to be a panel dataset:
>
> . xtset id Year
>     panel variable:    id (weakly    balanced)
>     time variable:    Year, 2002    to 2004
>     delta:    1 year
>
> (the dataset is not complete yet, so I only have two years so far and 
> more than 44.000 individuals)
>
> When I regress the model,
>
> . xtreg y x1 x2 x3 x4 x5 x6
>
> I get the error: "insufficient observations". Why do I get this error?
> Is this maybe due to the short time period or due to missing 
> observations for some individuals?
>
> Many thanks in advance.
> Natalie
> _______________________________________
>
> Research Unit Sustainability and Global Change
> Centre for Marine and Atmospheric Sciences
> Bundesstraße 55
> D-20146 Hamburg
>
>
>
>
>
>
>
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/