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2007 Jun 14
0
random effects in logistic regression (lmer)-- identification question
...If i put in some city level predictors, then the estimates of the variance components change--they essentially disappear to the minimum values--and the correlation is not 1.0 anymore. Random effects: Groups Name Variance Std.Dev. Corr PLACE RACEWhite 5e-10 2.2361e-05 RACENonwhite 5e-10 2.2361e-05 0.001 This indicates that, after adding in the city level variables, the unaccounted for city-level variation is very small. Correct? Now, back to the idea that there is always an implicit individual level random effect in a logistic regression. Is it meaningful to ask &q...