Re: How to nullified the correlation

RAMS wrote: 
Hai all,

        I have a data on eye.  Both the eyes were affected by Cataract
at alomst same stage.  Half of the patients were treated by a control
drug and half of the patients were treated by a newly founded drug.

       Here our objective is whether the newly founded drug is
effective over the control drug or not.

       If we take both eyes information then we have a problem of lack
of independence.  If we randomly take one eye information then we dont
know how much it express the sample.

      So i wish to take both eyes information and to nullify the
correlation between the eyes.  Anyone please help me.

You can simply use a nested model, with eye nested within indivual (who is then nested within treatment).

Bob

--
Bob O'Hara

Dept. of Mathematics and Statistics
P.O. Box 68 (Gustaf Hällströmin katu 2b)
FIN-00014 University of Helsinki
Finland

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