Begin forwarded message:
> From: Martina Zweimueller <Martina.Zweimueller(a)jku.at>
> Date: 05 agosto 2009 9:53:14 GMT+02:00
> To: stefano iacus <stefano.iacus(a)unimi.it>
> Subject: Antw: Re: [cem] Coarsening by explicit user choice
>
> Yes, I refer to the Stata version. I think the documentation is
> confusing in this point. I would write ... if you want to create a
> certain number of equally space bins, say 10, place #11 in
> parentheses
> after the variable.
>
> Best regards,
> Martina
>
>
> Martina ZWEIMÜLLER
> Department of Economics
> Johannes Kepler University Linz
> Altenbergerstr. 69
> A-4040 Linz, Austria
> martina.zweimueller(a)jku.at
>
> Tel.: +43-(0)732-2468-5393
> Fax: +43-(0)732-2468-8238
> http://www.econ.jku.at/Zweimuller/
> http://www.labornrn.at
>
>
>>>> stefano iacus <stefano.iacus(a)unimi.it> 8/5/2009 9:42 >>>
> I guess you refer to the Stata version of cem.
> You are right, that is the number of cutpoints including the extremes,
>
> so 11 cutpoints means 10 intervals.
> Thanks for raising this
>
> stefano
>
>
> On 05/ago/09, at 09:32, Martina Zweimueller wrote:
>
>> The CEM-documenation says that if you want to create a certain
>> number of
>> equally space bins, say 10, place #10 in parentheses after the
>> variable.
>> However if you have a variable with 10 values (e.g. running from 1
> to
>> 10) and you want to match on each value, the argument `variable'
> (#10)
>> gives you only 9 strata, whereas `variable' (#11) gives you 10
>> strata.
>>
>> Martina Zweimüller
>>
>> Martina ZWEIMÜLLER
>> Department of Economics
>> Johannes Kepler University Linz
>> Altenbergerstr. 69
>> A-4040 Linz, Austria
>> martina.zweimueller(a)jku.at
>>
>> Tel.: +43-(0)732-2468-5393
>> Fax: +43-(0)732-2468-8238
>> http://www.econ.jku.at/Zweimuller/
>> http://www.labornrn.at
>>
>> -
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>
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The CEM-documenation says that if you want to create a certain number of
equally space bins, say 10, place #10 in parentheses after the variable.
However if you have a variable with 10 values (e.g. running from 1 to
10) and you want to match on each value, the argument `variable' (#10)
gives you only 9 strata, whereas `variable' (#11) gives you 10 strata.
Martina Zweimüller
Martina ZWEIMÜLLER
Department of Economics
Johannes Kepler University Linz
Altenbergerstr. 69
A-4040 Linz, Austria
martina.zweimueller(a)jku.at
Tel.: +43-(0)732-2468-5393
Fax: +43-(0)732-2468-8238
http://www.econ.jku.at/Zweimuller/http://www.labornrn.at
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