Search found 432 matches
- Tue Aug 02, 2011 8:28 am
- Forum: runmlwin user forum
- Topic: Bug in residuals(u, savechains("u.dta", replace")) ?
- Replies: 4
- Views: 6148
Re: Bug in residuals(u, savechains("u.dta", replace")) ?
Hi Ash, I suspect the problem is associated with the fact that an N level multivariate response model is formulated as a N+1 level model in MLwiN where the lowest level is a pseudo level. (There are no random effects at this level, it exists solely to define the structure of the multivariate respons...
- Wed Jul 27, 2011 6:04 pm
- Forum: runmlwin user forum
- Topic: Predictions via the runmlwin interface: a clarification
- Replies: 6
- Views: 10752
Re: Predictions via the runmlwin interface: a clarification
That's great. I'm glad it worked.
Thank you for putting all the graphs and code in. It makes this post a useful resource for other users
Best wishes
George
Thank you for putting all the graphs and code in. It makes this post a useful resource for other users
Best wishes
George
- Wed Jul 27, 2011 4:42 pm
- Forum: runmlwin user forum
- Topic: Predictions via the runmlwin interface: a clarification
- Replies: 6
- Views: 10752
Re: Predictions via the runmlwin interface: a clarification
Hi Ewan, This is also an excellent question and follows naturally from your previous question. The answer is similar to before: After running runmlwin , you can generate all the predictions AND THEIR SAMPLING ERRORS (AND THEREFORE CONFIDENCE INTERVALS) that you would normally make using the "Pr...
- Tue Jul 26, 2011 6:16 pm
- Forum: runmlwin user forum
- Topic: Predictions via the runmlwin interface: a clarification
- Replies: 6
- Views: 10752
Re: Predictions via the runmlwin interface: a clarification
Hi Ewan, This is a very good question. After running runmlwin , you can generate all the predictions that you would normally make using the "Predictions" or "Customised Predictions" windows in MLwiN. However, we have not programmed up a runmlwin specific prediction post-estimatio...
- Mon Jul 25, 2011 2:49 pm
- Forum: runmlwin user forum
- Topic: highly correlated multivariate depenents -> numerical error
- Replies: 1
- Views: 4083
Re: highly correlated multivariate depenents -> numerical er
Hi Ash, What has happened is that the 2-by-2 student-level variance-covariance matrix has gone non-positive-definite on one of the iterations. What MLwiN does to solve this problem is to reset the relevant row of the variance-covariance matrix to zero and then to carry on iterating until convergence...
- Thu Jul 07, 2011 2:15 pm
- Forum: runmlwin user forum
- Topic: Error code: r(-1073740777);
- Replies: 7
- Views: 11083
Re: Error code: r(-1073740777);
Hi Paula, Part of your query asked how you can enter a categorical variable into a runmlwin model as a series of dummy variables without having to manually generate these dummy variables. One way to do this is to use the xi: prefix and the i. operator. For example: . use http://www.bristol.ac.uk/cmm...
- Thu May 12, 2011 2:51 pm
- Forum: runmlwin user forum
- Topic: How do you report fixed parameters as Odds ratios?
- Replies: 4
- Views: 10371
Re: How do you report fixed parameters as Odds ratios?
Hi Laia, Thank you. You spotted a bug. We were not calculating the lower and upper bounds of the 95% confidence intervals for odds ratios in the correct way. We were calculating them as plus or minus 1.96 times the standard error of the odds ratio. This is incorrect as it assumes the sampling distri...
- Thu May 12, 2011 10:12 am
- Forum: runmlwin user forum
- Topic: Can you use Stata's predict command after runmlwin?
- Replies: 1
- Views: 6896
Re: Can you use Stata's predict command after runmlwin?
Dear J, This is a good question. No we don't plan to extend Stata's postestimation predict command to work with runmlwin . This would involve working out and implementing the prediction formula for a very wide range of multilevel models. The aim of runmlwin is to make MLwiN functionality accessible ...
- Wed Apr 27, 2011 5:58 pm
- Forum: runmlwin user forum
- Topic: Error message: too many macros
- Replies: 10
- Views: 20052
Re: Error message: too many macros
Hi Corrie, Thanks for spotting this. Yes runmlwin is limited in how many explanatory variables you can put into the model. You can see this by running the following code: clear set obs 1000 gen id = _n gen y = rnormal() gen cons = 1 forvalues i = 1/200 { gen x`i' = rnormal() } quietly runmlwin y x1-...
- Fri Apr 22, 2011 9:56 am
- Forum: runmlwin user forum
- Topic: Error message: No version information foundr(198)
- Replies: 3
- Views: 6042
Re: Error message: No version information foundr(198)
This bug is now fixed.
To get the latest version of runmlwin, type the following in a net-aware version of Stata:
. adoupdate runmlwin
Best wishes
George
To get the latest version of runmlwin, type the following in a net-aware version of Stata:
. adoupdate runmlwin
Best wishes
George