st: Mixed ANOVA

[Marcello Pagano <pagano@hsph.harvard.edu>]

For Kristin:

Hello,

I have genotype and phenotype data for persons with a disease, their 
healthy siblings, and unrelated healthy controls.  Since the genotypes 
between affected persons and siblings are correlated, I need to create a 
random effect for family membership.  I am trying to run a mixed anova 
with fixed effect(genotype) and random effect(family).  I want to get an 
F-test for effect of genotype on phenotype.

I have read the documentation for anova, and the description says it 
does mixed-effects anovas, but there's no example of it, so I am not 
sure how to specify the model. 
Thanks,
Kristin
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