Statapeeps,
I wondered if any -xtperts- could help with this. :-) My cross-sectional
dataset has n=3452, with n=6 per group (except for one group where n=7).
After successfully fitting several cross-sectional FGLS regressions (both
for fixed and random effects), I thought I'd try and run an -xtpcse-
regression, since even the most controlled FGLS model tested 'positive'
for serial correlation.
Unfortunately, Stata refused, because:
no time periods are common to all panels, cannot estimate disturbance
covariance matrix using casewise inclusion
r(459);
Indeed it wasn't (as it was generated by [g time = _n], but that's because
I can't use a time variable for -tsset- because Stata says:
repeated time values within panel
r(451);
Naturally, a panel variable has also been included in my -tsset-. Since
it's necessary for Stata to recognise that my dataset is a time-series
dataset before running -xtpcse-(otherwise: "time variable not set, use
-tsset varname ...- r(111);"), what's the solution? (I didn't pick up
anything in -help- that answers my question!)
Yours,
CLIVE NICHOLAS,
Politics Building,
School of Geography, Politics and Sociology,
University of Newcastle-upon-Tyne,
Newcastle-upon-Tyne,
NE1 7RU,
United Kingdom.
*
* 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/
