Displaying 4 results from an estimated 4 matches for "manuals13".
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2013 Oct 15
1
cluster option in stata for random intercept model in the R language?
...el package).
Now in stata, there is an additional option for the regression to control for clustering; the vce(cluster clustvar) option, which changes the standard errors quite a bit.
(see http://www.stata.com/support/faqs/statistics/standard-errors-and-vce-cluster-option/ or http://www.stata.com/manuals13/xtxtreg.pdf).
Unfortunately I don't understand what this 'correction' does and why it yields different results.
First I thought it would control for autocorrelations over time (decisions), but if I model this directly with a random-intercept random-slope model, I don't get nearly t...
2014 Jan 23
2
Stata support in package foreign
...tata.
However, according to Stata's documentation both Stata 12 and 13 use
format 115, so foreign::read.dta should be able to read Stata 13 files.
It would be helpful to know if that is the case.
Second, Stata document reading R's POSIXct date-times into Stata at
http://www.stata.com/manuals13/ddatetime.pdf page 10 using format %tC.
The description there of 'UTC-adusted seconds' is ambiguous, but what is
said on page 2 suggests %tc is correct. Could someone please try
reading a recent R date-time into Stata (one since July 2012, the last
leap second) and see which format rea...
2017 Mar 22
3
GLM con clusters
...er clustvar) especifica que los errores estándar permiten la
correlación intragrupo, relajando el requisito habitual de que las
observaciones sean independientes. Es decir, las observaciones son
independientes entre grupos (grupos) pero no necesariamente dentro de los
grupos. *
http://www.stata.com/manuals13/rvce_option.pdf
O sea, quitan el supuesto de independencia entre observaciones de un mismo
grupo, en este lo indica la variable red. Pero ésto no afecta la estimación
de los coeficientes, si los intervalos de confianza.
El 22 de marzo de 2017, 13:38, Xavi tibau alberdi <xavitibau en gmail.co...
2017 Mar 22
3
GLM con clusters
Buenas tardes,
desde Uruguay, quiero realizar una regresión logística,con la función GLM,
pero ademas quiero designarle a las observaciones clusters.
La idea es decirle al programa que las observaciones corresponden a
diferentes clusters.
Saludos!
Sebastián.
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