[R] Using mutiply imputed data in NLME

From: Shige Song <shigesong_at_gmail.com>
Date: Tue 01 Mar 2005 - 04:17:42 EST


Dear All,

I am doing a growth modeling using NLME. I have three levels in my data: observation, individual, household. About half of my total sample have missing values in my household-level covariates. Under this situation, the best way to go is probably to multiply impute the data (for, say, 5 times), estimate the same model separately on each model using LME function, and merge the results. My question is: given the multiply imputed data sets have already been generated, is there a simple way to automate the process of estimating the mixed model and merging the results? HLM has similar features...

Thanks!

Best,
Shige



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