Search found 11 matches

by michaellawton
Tue Mar 12, 2013 11:00 am
Forum: runmlwin user forum
Topic: Problems with new MLWiN version
Replies: 3
Views: 19642

Re: Problems with new MLWiN version

My syntax is below (it is only the final model that has problems with the message)

matrix a= (1,1,0)
. runmlwin score cons fp1 fp6 , level2 (patid: cons ) level1(newids: cons ) nopause maxiterations(1250) tolerance(1)
. runmlwin score cons fp1 fp6 , level2 (patid: cons fp1) level1(newids: cons ...
by michaellawton
Mon Mar 11, 2013 3:09 pm
Forum: runmlwin user forum
Topic: Problems with new MLWiN version
Replies: 3
Views: 19642

Problems with new MLWiN version

Hey runmlwin

I had a runmlwin model that was working back in OCt 2012. I am currently writing up a paper and when I try to run the model with the same command I get the following message

"V gone -ve definite for block 0 iteration aborted(fixed pass)"

any idea what is going on here?

Best wishes ...
by michaellawton
Wed Feb 01, 2012 10:23 am
Forum: runmlwin user forum
Topic: Order of variables?
Replies: 3
Views: 5961

Re: Order of variables?

Hi here is one model:


. runmlwin score cons fp1 fp6 ageonset fp1ageonset fp6ageonset relapse_var gender , level2(patid: cons fp1 fp6) level1(newids: cons fp1 ) nopause maxiterations(1250)

MLwiN 2.24 multilevel model Number of obs = 1872
Normal response model
Estimation algorithm: IGLS ...
by michaellawton
Tue Jan 31, 2012 4:44 pm
Forum: runmlwin user forum
Topic: Order of variables?
Replies: 3
Views: 5961

Order of variables?

Hi,

I have just noticed that the way I order the variables in my multilevel model (repeated measures) can lead to very small but slight adjustments in

1. Log likelihood
2. Parameter estimates (plus std errors)
3. The number of iterations to convergence.

It is a negligible difference but it still ...
by michaellawton
Thu Jan 19, 2012 4:47 pm
Forum: runmlwin user forum
Topic: Level 1 residuals merge error
Replies: 4
Views: 7600

Re: Level 1 residuals merge error

Hello

I just found my problem, I had fitted the following model:

runmlwin score cons ageonset fp1 fp6 , level2 (patid: cons fp1 fp6 ) level1(score: cons, residuals(lev1,var) ) nopause

However because I had made my level 1 indicator the same as my dependent variable (i.e. score) it came into ...
by michaellawton
Thu Jan 19, 2012 3:11 pm
Forum: runmlwin user forum
Topic: Level 1 residuals merge error
Replies: 4
Views: 7600

Re: Level 1 residuals merge error

Hi,

Just tried your install command and now Stata displays the message:

runmlwin requires MLwiN version 2.24 or higher. You can download the latest version of MLwiN at: http://www.bristol.ac.uk/cmm/software/mlwin/download/upgrades.html

Can you tell me how to revert to the previous runmlwin ...
by michaellawton
Thu Jan 19, 2012 12:11 pm
Forum: runmlwin user forum
Topic: Level 1 residuals merge error
Replies: 4
Views: 7600

Level 1 residuals merge error

When asking runmlwin to store the level 1 residuals (using the residuals command) from my repeated measures model I get the following error message:

merge: after merge, not all observations from master or matched
(merged result left in memory)

I then have a list of residuals with a corresponding ...
by michaellawton
Wed Jan 18, 2012 3:20 pm
Forum: runmlwin user forum
Topic: Autocorrelation
Replies: 1
Views: 4241

Autocorrelation

Hello

Is there a simple way of testing for autocorrelation (e.g. lagged scatterplots, correlograms) after fitting a repeated measures model with runmlwin?

Many thanks
Michael
by michaellawton
Mon Nov 28, 2011 11:32 pm
Forum: runmlwin user forum
Topic: All level 2 random effects are zero
Replies: 1
Views: 4940

All level 2 random effects are zero

I have been having some problems with a model of a subset of my data. With other subsets or all my data I have been getting sensible results. My model is a repeated measures model with a continuous outcome (score) nested in individuals (patid) as detailed below where cons=1 and fp1 and fp6 are time ...
by michaellawton
Thu Nov 24, 2011 11:49 pm
Forum: runmlwin user forum
Topic: Multivariate model with binary and cts utcomes
Replies: 3
Views: 6840

Re: Multivariate model with binary and cts utcomes

I have also been fitting 1 discrete (binary) outcome and 1 continuous (repeated measure) outcome. My program (shown below) was working fine within MLwiN 2.23

runmlwin (score cons fp1 fp6, equation(1)) (drugbin cons, equation(2)), ///
level2(patid: (cons fp1 fp6, eq(1)) (cons, eq(2))) ///
level1 ...