R help - Feb 2012 - Trust in a glm.nb model results with an itereation limit reached

Hello to everyone.
I'm fitting a glm.nb model to a count data. I'm using about 8 predictive
variables.
Once a run the script I do get a result but it tells me that the iteration
limit has been reached.
So, can i trust the results given by the model? 
Could it be a multicollinearity problem?

Thank you for taking the time to help me.
Greetings

Lucas.


--
View this message in context:
http://r.789695.n4.nabble.com/Trust-in-a-glm-nb-model-results-with-an-itereation-limit-reached-tp4376073p4376073.html
Sent from the R help mailing list archive at Nabble.com.

On Feb 10, 2012, at 7:14 AM, Lucas wrote:
> Hello to everyone.
> I'm fitting a glm.nb model to a count data. I'm using about 8  
> predictive
> variables.
> Once a run the script I do get a result but it tells me that the  
> iteration
> limit has been reached.
Most regression functions have a control parameter that can increase  
the maximum number of iterations, but you provided no code so all is  
guesswork from here.
> So, can i trust the results given by the model?
Probably not. Some functions will not even record estimates if they  
have failed the convergence tests.
> Could it be a multicollinearity problem?
Could be.
>
> Thank you for taking the time to help me.
-- 

David Winsemius, MD
West Hartford, CT