I am not well informed on -xtpcse- but I note that
your time variable will be an integer only if year
is an even number. In general, time variables should be
integers.
Nick
[email protected]
Yoshiro Nagao
> I tried to analyse a biannually
> sampled data by xtpcse
> (longitudinal Prais-Winsten model)
>
> .gen time_seq = year/2
> .tsset person time_seq
> .xtpcse outcome exposure
>
> no time periods are common to all panels, cannot estimate
> disturbance
> covariance matrix using casewise inclusion
> r(459);
>
> Does this error message mean that
> for each sampled year,
> even a single missing person
> is unacceptable?
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
