Wrong list.

Post to r-sig-mixed-models.

-- Bert

On Mon, Jul 2, 2012 at 6:47 PM, Camila Mendes <cacamendes85@gmail.com>wrote:

> Hey all -
>
> I am a newbie on mixed-effects models. I want to estimate the following
> model:
>
> Y_it = alpha_0t + alpha_1t*X_it + e_it
> alpha_0t = gamma_00 + u_0t
> alpha_1t = gamma_10 + gamma_11*W_it + u_1j
>
> Where Y is my outcome, X is my level-1 predictor, and W is my level 2
> predictor.
>
> I am not sure if I am doing it right. Is this the correct specification of
> the formula?
>
> model = lmer(Y ~ X + X:Y + ( X | ID), data = data)
>
> Also, can you help me to write down the combined model formula? I tried
> by substituting on the first equation, but I got some weird interactions
> with the residual (?)
>
> Thanks a lot!
>
> - Camila
>
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>
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>



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm

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