R help - Jun 2007 - comparison of two logistic regression models

Dear list members!

Could you help me?
I would like to compare two models: a) logistic regression model, 3 
factors as independents b) logistic regression model, 3 factors and one 
random effect as independents (function glmmPQL). AIC are not available 
with PQL and model comparison using ANOVA is not possible. What should I do?

Thanks in advance.
Anna-Maria

You could use lmer in the lme4 package to fit the logistic regression
with random effect as it does report the AIC.

On 07/06/07, Anna-Maria Tyriseva <anna-maria.tyriseva at helsinki.fi>
wrote:
> Dear list members!
>
> Could you help me?
> I would like to compare two models: a) logistic regression model, 3
> factors as independents b) logistic regression model, 3 factors and one
> random effect as independents (function glmmPQL). AIC are not available
> with PQL and model comparison using ANOVA is not possible. What should I
do?
>
> Thanks in advance.
> Anna-Maria
>
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