Dear GKonyarov,
Thanks for the post. I have read it a couple of times and although you describe your models I wasn't sure what exactly question you are asking here? Apologies that in lockdown I have been a bit slow to look at the forums and sadly we have lost our colleague Harvey Goldstein whose ...
Search found 162 matches
- Fri May 15, 2020 8:37 am
- Forum: R2MLwiN user forum
- Topic: Complex surveys with MI and replicate weights
- Replies: 1
- Views: 18193
- Fri May 15, 2020 8:32 am
- Forum: MLwiN user forum
- Topic: How to estimate a multi-level multi-process event history model (binary and categorical responses)
- Replies: 2
- Views: 6943
Re: How to estimate a multi-level multi-process event history model (binary and categorical responses)
Hi Ashley,
Thanks for your question. I am a bit rusty on these sorts of models and taking a quick look at the equations window in MLwiN when you try and fit multivariate response models you are restricted to responses being normal, binomial or Poisson. I don't know if this has changed since the ...
Thanks for your question. I am a bit rusty on these sorts of models and taking a quick look at the equations window in MLwiN when you try and fit multivariate response models you are restricted to responses being normal, binomial or Poisson. I don't know if this has changed since the ...
- Fri May 15, 2020 8:20 am
- Forum: R2MLwiN user forum
- Topic: Pre-post design
- Replies: 1
- Views: 13872
Re: Pre-post design
Hi Ken,
Apologies that this one hasn't been answered after so long. Basically I think R2MLwiN has a very similar syntax to glmer and thus will likely fit the same models. They are using different algorithms so I am not sure which will be the quicker. I suspect estimates for 2 models would be ...
Apologies that this one hasn't been answered after so long. Basically I think R2MLwiN has a very similar syntax to glmer and thus will likely fit the same models. They are using different algorithms so I am not sure which will be the quicker. I suspect estimates for 2 models would be ...
- Mon Apr 20, 2020 5:39 pm
- Forum: MLwiN user forum
- Topic: variance function and its uncertainty
- Replies: 4
- Views: 8507
Re: variance function and its uncertainty
Hi Sun,
Not really as as you say you don't have normality so any use of the SEs would be very approximate. you might consider bootstrapping I guess but easiest with MCMC.
Best wishes,
Bill.
Not really as as you say you don't have normality so any use of the SEs would be very approximate. you might consider bootstrapping I guess but easiest with MCMC.
Best wishes,
Bill.
- Thu Apr 02, 2020 3:33 pm
- Forum: MLwiN user forum
- Topic: variance function and its uncertainty
- Replies: 4
- Views: 8507
Re: variance function and its uncertainty
Hi Sun,
With regard MCMC my suggestion is to look at my MCMC manual where I cover how one works out confidence intervals for derived quantities - here I cover in section 4.7 the difference between 2 schools, 4.8 their ranks with CIs and most relevant for you the ICC/VPC in section 4.9. Here you can ...
With regard MCMC my suggestion is to look at my MCMC manual where I cover how one works out confidence intervals for derived quantities - here I cover in section 4.7 the difference between 2 schools, 4.8 their ranks with CIs and most relevant for you the ICC/VPC in section 4.9. Here you can ...
- Fri Mar 13, 2020 4:26 pm
- Forum: runmlwin user forum
- Topic: Jointly test coefficient is 0 across 3 outcomes from trivariate cross-classified model fitted using MCMC
- Replies: 1
- Views: 5363
Re: Jointly test coefficient is 0 across 3 outcomes from trivariate cross-classified model fitted using MCMC
Hi Rachael,
MCMC is fitting a Bayesian model so the concept of a classical P value is not valid for MCMC estimates - I think we do offer Bayesian P values for all parameters though which basically check what proportion of iterations are positive / negative for a chain.
Best wishes,
Bill.
MCMC is fitting a Bayesian model so the concept of a classical P value is not valid for MCMC estimates - I think we do offer Bayesian P values for all parameters though which basically check what proportion of iterations are positive / negative for a chain.
Best wishes,
Bill.
- Thu Jan 23, 2020 3:07 pm
- Forum: MLwiN user forum
- Topic: Is level 2 variance significantly different from 0?
- Replies: 1
- Views: 5345
Re: Is level 2 variance significantly different from 0?
That depends on which estimation method you are using but generally involves fitting the model with and without the random intercept and looking at some indicator of model fit - a LR test for ML methods or comparing DIC for MCMC. Suggest you look in the user guides for examples.
Bill.
Bill.
- Thu Jan 23, 2020 3:05 pm
- Forum: runmlwin user forum
- Topic: cross-classified MLM - MCM - random and fixed effects
- Replies: 1
- Views: 5381
Re: cross-classified MLM - MCM - random and fixed effects
Hi Johann,
Generally when we talk about cross-classified models we are assuming that each of these levels is a random source of variation and is treated as a set of RANDOM effects. It doesn't make a lot of sense to include fixed effects as well as random effects for the same terms. Generally fixed ...
Generally when we talk about cross-classified models we are assuming that each of these levels is a random source of variation and is treated as a set of RANDOM effects. It doesn't make a lot of sense to include fixed effects as well as random effects for the same terms. Generally fixed ...
- Tue Nov 26, 2019 1:57 pm
- Forum: runmlwin user forum
- Topic: 95% prediction interval for new obs from same cluster populations
- Replies: 3
- Views: 7069
Re: 95% prediction interval for new obs from same cluster populations
Hi Rachael,
Just generate a level 1 residual (using the level 1 variance) and add it to the prediction and you should be sorted.
Bill.
Just generate a level 1 residual (using the level 1 variance) and add it to the prediction and you should be sorted.
Bill.
- Tue Nov 26, 2019 12:40 pm
- Forum: runmlwin user forum
- Topic: 95% prediction interval for new obs from same cluster populations
- Replies: 3
- Views: 7069
Re: 95% prediction interval for new obs from same cluster populations
Hi Rachael,
If you were hoping to get 95% intervals for individuals rather than for the average individual you will also need to have level 1 in your predictions I would expect.
Best wishes,
Bill.
If you were hoping to get 95% intervals for individuals rather than for the average individual you will also need to have level 1 in your predictions I would expect.
Best wishes,
Bill.