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| From | brendan.halpin@ul.ie (Brendan Halpin) |
| To | statalist@hsphsun2.harvard.edu |
| 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 Tel: w +353-61-213147 f +353-61-202569 h +353-61-338562; Room F1-009 x 3147 mailto:brendan.halpin@ul.ie ULSociology on Facebook: http://on.fb.me/fjIK9t http://teaching.sociology.ul.ie/bhalpin/wordpress twitter:@ULSociology * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/