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Re: st: RE: GLLAMM: logitic regression interaction non signficant but lincom gives signficant result
From
[email protected] (Brendan Halpin)
To
[email protected]
Subject
Re: st: RE: GLLAMM: logitic regression interaction non signficant but lincom gives signficant result
Date
Sat, 19 May 2012 19:40:07 +0100
On Sat, May 19 2012, Abdelouahid Tajar wrote:
> The main model says that the
> two slopes are not significantly different (interaction non significant0
> and because the slope of the reference is not significantly different
> from 0 this should mean that the slope of group1 is also not
> significantly different from 0 but the lincom result shows that the
> slope of group 1 is actually significantly different from 0, hence my
> confusion.
The fact that there is evidence that group 1 has an effect while there
is no evidence that group 2 has an effect, is not evidence that there is
a significant difference between group 1 and group 2.
This is exactly what "the difference between significant and
not-significant is not significant" is referring to.
Brendan
--
Brendan Halpin, Department of Sociology, University of Limerick, Ireland
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