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Re: st: Regression with clustered robust standard errors


From   Austin Nichols <[email protected]>
To   "[email protected]" <[email protected]>
Subject   Re: st: Regression with clustered robust standard errors
Date   Tue, 11 Feb 2014 09:19:23 -0500

Alberto Valzolgher - 1577733 <[email protected]>:

If you want to cluster by year and industry (2 dimensions), use -ivreg2-:

ssc inst ivreg2
help ivreg2

and read http://www.stata.com/meeting/uk10/UKSUG10.Baum.pdf


On Tue, Feb 11, 2014 at 7:22 AM, Nick Cox <[email protected]> wrote:
> You are correct and your supervisors are wrong.
>
> The syntax is clear: Stata expects a variable name.
>
> Nick
> [email protected]
>
>
> On 11 February 2014 10:45, Alberto Valzolgher - 1577733
> <[email protected]> wrote:
>> Dear statalist,
>>
>> I am conducting a research on stock market first day return, and I'd like
>> to regress with clustered robust standard errors, clustering by year and
>> industry.
>>
>> For this purpose I am using the option vce(cluster YEAR). My question is,
>> does the system consider just one cluster (YEAR) or it considers the n
>> years in the YEAR variable as clusters (in my output is written s.e. adj.
>> for 11 clusters in YAER)?
>> I think the second interpretation is correct but my supervisors told me i
>> should specificate in the cluster option all the clusters e.g. cluster
>> (2001 2002 2003...).
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