tsset cid tid
gen l1var = l.var
The variable cid must be numerical. If it is not:
egen cid_num = group(cid)
Jean Salvati
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of
> Reka Sundaram-Stukel
> Sent: Wednesday, February 15, 2006 3:04 PM
> To: [email protected]
> Subject: Re: st: Lag Variable in Panel Data
>
> Dear Abhijit,
>
> bysort cid (tid): g variablet_1=variable[_n-1]
>
> hope this helps.
>
> Reka
>
>
>
> On Feb 15, 2006, at 12:35 PM, Abhijit Sen Gupta wrote:
>
> > Hi!
> > Could anybody please tell me how to generate lagged values of a
> > variable in panel data. My panel id is cid and time id is tid.
> > Thanks
> > Cheers
> > Abhijit
> >
> > --- Richard Williams <[email protected]>
> > wrote:
> >
> >> Thanks to Kit Baum, yet another update to -gologit2- is
> now available
> >> from SSC - and unlike most previous updates, this one
> actually offers
> >> some added functionality and not just bug fixes!
> >>
> >> * While gologit2 continues to work in Stata 8.2, if you are using
> >> Stata 9, the by, nestreg, stepwise, xi, and possibly other prefix
> >> commands are allowed. That is, Stata 9 users get added
> functionality
> >> but everything else still works ok if you have 8.2.
> >> (I'm not sure
> >> how much longer I will try to keep new versions running
> under 8.2 but
> >> for now at least it was surprisingly easy to do.)
> >>
> >> * If the user considers them more appropriate for their
> data, probit,
> >> complementary log-log, and log-log links can be used instead of
> >> logit. The link() function specifies the link function to
> be used.
> >> The legal values are link(logit), link(probit), link(cloglog) and
> >> link(loglog) which can abbreviated as link(l), link(p),
> link(c) and
> >> link(ll). link(logit) is the default if the option is omitted.
> >>
> >> * The ancillary file gologit2.pdf contains many examples
> and has been
> >> updated to document the new features. However, ancillary files do
> >> not automatically get updated when you update the program.
> Therefore
> >> you may wish to download it directly from
> >>
> >> http://www.nd.edu/~rwilliam/gologit2/gologit2.pdf
> >>
> >> * For more info, there is a gologit2 general info page at
> >>
> >> http://www.nd.edu/~rwilliam/gologit2/index.html
> >>
> >> and a troubleshooting FAQ at
> >>
> >> http://www.nd.edu/~rwilliam/gologit2/tsfaq.html
> >>
> >> Here is the overall description of the program:
> >>
> >> gologit2 estimates generalized ordered logit models for ordinal
> >> dependent variables. A major strength of gologit2 is that
> it can also
> >> estimate three special cases of the generalized
> >> model: the
> >> proportional odds/parallel lines model, the partial
> proportional odds
> >> model, and the logistic regression model. Hence,
> >> gologit2 can
> >> estimate models that are less restrictive than the
> proportional odds
> >> /parallel lines models estimated by ologit (whose assumptions are
> >> often violated) but more parsimonious and interpretable than those
> >> estimated by a non-ordinal method, such as multinomial logistic
> >> regression (i.e. mlogit). Other key strengths of gologit2 include
> >> options for linear constraints, alternative model
> parameterizations,
> >> automated model fitting, survey data (svy) estimation, alternative
> >> link functions (logit, probit, complementary log-log and log-log),
> >> and the computation of estimated probabilities via the predict
> >> command. gologit2 works under both Stata 8.2 and Stata 9
> or higher.
> >> Syntax is the same for both versions; but if you are using
> Stata 9 or
> >> higher,
> >> gologit2 supports
> >> several prefix commands, including by, nestreg, xi and sw.
> gologit2
> >> is inspired by Vincent Fu's gologit program and is backward
> >> compatible with it but offers several additional powerful options.
> >>
> >> -------------------------------------------
> >> Richard Williams, Notre Dame Dept of Sociology
> >> OFFICE: (574)631-6668, (574)631-6463
> >> FAX: (574)288-4373
> >> HOME: (574)289-5227
> >> EMAIL: [email protected]
> >> WWW (personal): http://www.nd.edu/~rwilliam
> >> WWW (department): http://www.nd.edu/~soc
> >>
> >> *
> >> * 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/
> >>
> >
> >
> >
> > "Some people see things as they are and say why.
> > I dream things that never were and say why not?"
> >
> > Abhijit Sen Gupta
> > Graduate Student
> > University of California at Santa Cruz Visit me : -
> > http://econ.ucsc.edu/grads/abhijit
> >
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> > *
> > * 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/
>
> *
> * 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/
>
*
* 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/
