Hi Diego,
I think you are best transforming your data into long format and fitting a cross-classified model with exam score nested within pupil and school. That way you can easily include time varying covariates as you have 1 response per year. The alternative/extension where you make the school ...
Search found 162 matches
- Wed Jul 03, 2013 9:52 pm
- Forum: MLwiN user forum
- Topic: HELP setting up multiple membership model
- Replies: 4
- Views: 16066
- Tue Jul 02, 2013 9:35 am
- Forum: MLwiN user forum
- Topic: HELP setting up multiple membership model
- Replies: 4
- Views: 16066
Re: HELP setting up multiple membership model
Dear DrDTorres,
My main concern here is whether your response is 1 per year ? If so then you simply have a simple 3 level model. If you want to do something more complicated then
as I see it you have several choices. You could fit a variant of a cross-classified model which is in fact a 3 level ...
My main concern here is whether your response is 1 per year ? If so then you simply have a simple 3 level model. If you want to do something more complicated then
as I see it you have several choices. You could fit a variant of a cross-classified model which is in fact a 3 level ...
- Wed Jun 12, 2013 9:39 am
- Forum: MLwiN user forum
- Topic: multivariate Wald test
- Replies: 1
- Views: 9517
Re: multivariate Wald test
Dear mwkoeter,
The intervals and tests window under Estimation will do this. You simply choose the fixed button at the bottom of the screen and increase # of functions to 3. Then for each column place a 1 next to 1 of the 3 dummies ( a different one for each column) and click calc to get the chi ...
The intervals and tests window under Estimation will do this. You simply choose the fixed button at the bottom of the screen and increase # of functions to 3. Then for each column place a 1 next to 1 of the 3 dummies ( a different one for each column) and click calc to get the chi ...
- Mon Mar 18, 2013 11:58 am
- Forum: MLwiN user forum
- Topic: spatial modeling
- Replies: 1
- Views: 4950
Re: spatial modeling
Dear user,
I'll be honest with you and say that I am not sure I have ever tried a binary response model with spatial random effects. The majority of the time in disease mapping which is the field for which I coded the CAR modelling section the responses are treated as counts and fitted as Poisson ...
I'll be honest with you and say that I am not sure I have ever tried a binary response model with spatial random effects. The majority of the time in disease mapping which is the field for which I coded the CAR modelling section the responses are treated as counts and fitted as Poisson ...
- Thu Jan 31, 2013 12:58 pm
- Forum: MLwiN user forum
- Topic: Multilevel Multiple Imputation
- Replies: 2
- Views: 5818
Re: Multilevel Multiple Imputation
Dear medha001,
Just last week we came across a similar issue. The problem is if you have individuals who are missing on all responses then this causes issues with MLwiN when you switch to MCMC. We have made a change that will fix these issues, which will appear in the next version 2.27 but strictly ...
Just last week we came across a similar issue. The problem is if you have individuals who are missing on all responses then this causes issues with MLwiN when you switch to MCMC. We have made a change that will fix these issues, which will appear in the next version 2.27 but strictly ...
- Fri Nov 16, 2012 8:24 am
- Forum: MLwiN user forum
- Topic: Changing values in Variance- Covariance matrix
- Replies: 3
- Views: 8138
Re: Changing values in Variance- Covariance matrix
Hi,
In the situation in which you have level 1 variables that you make random at level 2 and for some reason IGLS gives a non-positive definite answer then the advice is to change the values prior to running MCMC so that they make sense. The values you choose have 2 roles - (i) starting values for ...
In the situation in which you have level 1 variables that you make random at level 2 and for some reason IGLS gives a non-positive definite answer then the advice is to change the values prior to running MCMC so that they make sense. The values you choose have 2 roles - (i) starting values for ...
- Thu Nov 15, 2012 5:14 pm
- Forum: MLwiN user forum
- Topic: Compare DIC
- Replies: 4
- Views: 9999
Re: Compare DIC
There is no theory based fixed difference e.g. 10 that should be compared when comparing the DIC of two models although 10 might have been a rule of thumb suggested by someone - in theory the model with the lowest DIC is better but of course there is stochastic noise when using MCMC so a very small ...
- Thu Nov 15, 2012 5:08 pm
- Forum: MLwiN user forum
- Topic: Changing values in Variance- Covariance matrix
- Replies: 3
- Views: 8138
Re: Changing values in Variance- Covariance matrix
Dear hdilk0507,
I saw your question and have a quick answer. It really makes no sense to allow a level 2 variable to vary across level 2 units. Consider 1 level 2 unit then the predictor associated with the intercept will take value 1 for all individuals in the unit and the level 2 variable will ...
I saw your question and have a quick answer. It really makes no sense to allow a level 2 variable to vary across level 2 units. Consider 1 level 2 unit then the predictor associated with the intercept will take value 1 for all individuals in the unit and the level 2 variable will ...
- Thu Oct 11, 2012 3:05 pm
- Forum: MLwiN user forum
- Topic: Residuals prediction and covariance-variance
- Replies: 1
- Views: 5413
Re: Residuals prediction and covariance-variance
Hi Econsic1976,
This is because the residuals are shrunken residuals - I think the answer might be quite technical and available in Harvey Goldstein's book or you could email him.
Regards,
Bill.
This is because the residuals are shrunken residuals - I think the answer might be quite technical and available in Harvey Goldstein's book or you could email him.
Regards,
Bill.
- Thu Oct 11, 2012 3:02 pm
- Forum: MLwiN user forum
- Topic: Zero variance question
- Replies: 2
- Views: 5841
Re: Zero variance question
Hi Mdommers,
I could take a look if you send me your worksheet (william.browne@bristol.ac.uk).
Regards,
Bill.
I could take a look if you send me your worksheet (william.browne@bristol.ac.uk).
Regards,
Bill.