using runmlwin with survey weights

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becciaa1992
Posts: 21
Joined: Thu Oct 17, 2019 12:21 am

using runmlwin with survey weights

Post by becciaa1992 »

Hello,

I am trying to fit a two-level multilevel logistic model in runmlwin using survey weights. The model runs fine using PQL2 estimation methods, however, I get the following error when trying to run the same model using MCMC methods: "Weights are only valid for univariate models estimated using (R)IGLS"

Here is the code I am using:

Code: Select all

* Fit model using PQL2
runmlwin outcome cons , /// 
  level2(group: cons) ///
  level1(id:, weightvar(weight)) ///
  discrete(distribution(binomial) link(logit) denominator(denominator) pql2) ///
  rigls maxiterations(100) ///
  nopause
  
* Fit model using MCMC
runmlwin outcome cons , ///
  level2(group: cons, residuals(u, savechains("u.dta", replace))) /// 
  level1(id:, weightvar(weight)) ///
  discrete(distribution(binomial) link(logit) denominator(denominator)) ///
  mcmc(burnin(5000) chain(50000) thinning(50) ///
    savechains("beta.dta", replace)) initsprevious /// 
  nopause 
I do have the most recent version of runmlwin. Any help would be appreciated, thank you!
ChrisCharlton
Posts: 1348
Joined: Mon Oct 19, 2009 10:34 am

Re: using runmlwin with survey weights

Post by ChrisCharlton »

Unfortunately weighting is not currently implemented for MCMC within MLwiN, so you will be unable to fit this here. See http://www.bristol.ac.uk/cmm/software/s ... ights.html for more details on using weights with MLwiN.
ManuelDewez
Posts: 16
Joined: Tue Mar 09, 2021 5:54 pm

Re: using runmlwin with survey weights

Post by ManuelDewez »

Hello Chris,

I know that the post is from September 2020, but has there been any change on this topic, is weighting possible with MCMC in MLwin?

Thank you

Manuel
ChrisCharlton
Posts: 1348
Joined: Mon Oct 19, 2009 10:34 am

Re: using runmlwin with survey weights

Post by ChrisCharlton »

Sorry, there is no change here, and this is not currently in our in our future plans.
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