Error message: 3 contradictions in 6744 observations ...

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Beatriz
Posts: 2
Joined: Fri Apr 08, 2011 4:20 pm

Error message: 3 contradictions in 6744 observations ...

Post by Beatriz »

HI there,
I am just starting playing around with runmlwin fitting a three-level logistic model with 4 items nested within 1686 people nested in 103 neigbourhoods. Could you explain please what may be the problem when the error message "13 contradictions in 6744 observations assertion is false" appears?

Many thanks

Beatriz

GeorgeLeckie
Site Admin
Posts: 430
Joined: Fri Apr 01, 2011 2:14 pm

Re: Error message: 3 contradictions in 6744 observations ...

Post by GeorgeLeckie »

Hi Bea,

The runmlwin command makes use of several standard Stata commands. This is an error message relating to one of those. However, because you can't see what runmlwin is doing behind the scenes, it is not clear what the error message is referring to. What we need to do is to put more informative runmlwin specific error messages when, for example, an Stata assert command fails etc.

Please email me a short do-file and data set to replicate the error. We can then identify what the source of the error is. We will then look into putting on a more informative error message.

Many Thanks

George

GeorgeLeckie
Site Admin
Posts: 430
Joined: Fri Apr 01, 2011 2:14 pm

Re: Error message: 3 contradictions in 6744 observations ...

Post by GeorgeLeckie »

Hi Bea,

This error message related to an instance of us using a Stata assert command within runmlwin to check that the binary response variable for your multilevel logit model was indeed binary. You received an error message as we hadn't allowed for the possibility of missing response values. We have now rectified this. We have also put in an informative error message so that if your response variable was not binary you would now be told this.

We have updated runmlwin, to get the latest version type the following from within a net-aware version of Stata:

. adoupdate runmlwin

Best wishes

George

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