Dear bissery,
How do estimate intraclass correlation for dichotomous data. That is,
replace your continuous variable example with categorical variable.
pi yaw
1 1
0 2
1 3
1 1
0 2
0 3
1 1
1 2
0 3
cheers
atiti
--- In [email protected], BISSERY Alvine <Alvine.BISSERY@h...>
wrote:
> If you have one continuous variable called "measure", which contains
the
> value of measure on each subject, and one variable called "subject"
wich
> contains the label of each subject, do
>
> loneway measure subject
>
> it will give you the intraclass correlation
>
> For example:
>
>
> mes sub
> 25 1
> 36 2
> 14 3
> 24 1
> 35 2
> 12 3
> 25 1
> 37 2
> 14 3
>
> . loneway mes sub
>
> One-way Analysis of Variance for mes:
>
> Number of obs = 9
> R-squared = 0.9931
>
> Source SS df MS F Prob >
F
>
> Between sub 770.66667 2 385.33333 433.50
0.0000
> Within sub 5.3333333 6 .88888889
>
> Total 776 8 97
>
> Intraclass Asy.
> correlation S.E. [95% Conf. Interval]
> ------------------------------------------------
> 0.99311 0.00792 0.97759 1.00863
>
> Estimated SD of sub effect 11.32025
> Estimated SD within sub .942809
> Est. reliability of a sub mean .9976932
> (evaluated at n=3.00)
>
>
> I Hope this helps
>
>
> Alvine Bissery
>
> *********************************************
> Alvine Bissery
> Biostatisticienne
>
> H�pital Europ�en Georges Pompidou
> Centre d' Investigations Cliniques
> 20-40 rue Leblanc
> 75 908 Paris Cedex 15
> France
>
> t�l: +33 1 56 09 29 13
> fax: +33 1 56 09 29 29
> mail: alvine.bissery@h...
> > -----Message d'origine-----
> > De: Jeffrey Simons [mailto:jsimons@u...]
> > Date: lundi 2 septembre 2002 00:08
> > �: statalist@h...
> > Objet: st: Intraclass correlation?
> >
> >
> > How can you do intraclass correlation coefficients in Stata
> > for examining
> > test-retest reliability?
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/support/faqs/res/findit.html
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
