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Re: st: filling missing values


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: filling missing values
Date   Sat, 26 Jan 2013 09:30:35 +0000

If you think interpolation is a good idea for your problem, it is not
outrageous in my view to try three methods to see which works best.
(Sounds like a big "if" to me.) Otherwise your question is
unanswerable, as which works "best" will depend on patterns of change
in your data.

You are referring here in part to user-written programs, so please
explain where they come from, as is recommended in the Statalist FAQ.
You missed -pchipolate- (SSC).

Nick

On Sat, Jan 26, 2013 at 2:23 AM, Zied Ouelhazi <ouelhazizied@gmail.com> wrote:

> I am working on panel data. Using PCSE regression I need to fill in missing
> values for some covariates. what is the best method to interpolate (Y is the
> covariate and X is time var) if the pattern is unknown: ipolate or cipolate
> or csipolate?
>
> thanks
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