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Re: st: z/t-value "."?

From   Maarten buis <>
Subject   Re: st: z/t-value "."?
Date   Thu, 17 Apr 2008 21:55:48 +0100 (BST)

--- Markus Köller <> wrote:
> would you shortly explain to me, what you meant by:"Model did not
> converge?" Does it mean, that my apporach is useless or wrong?
> As I said, the z-value "." appears only for variables which should
> have a very significant impact.

It could mean many things.
Do you get any comments in the itteration log for the last itteration?
Do you get any warnings about perfect predictions?

It is sometimes also helpful to do some tabs of the the dependent
variable and the variable that is causing problems, just to see if
something is weird.

-- Maarten

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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