Re: st: impute with draws from random distribution

[D-Ta <altruist81@gmx.de>]

i totally agree, it doesnt give any additional information. BUT, it 
would simply help me to readjust the outcomes compared between treatment 
and control group relative to the start-date of the programm.
And to do this I need a hypothetical start-date for non-participants.

How else could you estimate (e.g.) the treatment effect of training on 
(e.g.) the employment probability (e.g.) 2 month after training start?

Thats what I am after.

Thanks for your support

Darjusch

Am 22.06.2011 14:01, schrieb Maarten Buis:
> On Wed, Jun 22, 2011 at 1:46 PM, D-Ta<altruist81@gmx.de>  wrote:
> > So, whats a valid comparison group then in your opinion, taking into account
> > the timing of the training? Or should I neglect that information about the
> > timing completing when matching?
>
> As you said yourself it is logically impossible to get someone with
> the same timing of the intervention when one group did and another
> group did not receive the intervention. So you cannot use that
> variable to match.
>
> Look at this problem differently: What would you be matching on when
> you imputed timing? Imputation does not create new information, it
> just replicates the patterns that are present in the observed part of
> the data. So imputing timing and than matching on imputed timing does
> not add anything compared to just leaving timing out and match on the
> variables you would have used to impute.
>
> Hope this helps,
> Maarten
>
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
>
> http://www.maartenbuis.nl
> --------------------------
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