[R-sig-ME] Deviance tests and contrasts

David Duffy davidD at qimr.edu.au
Mon Jun 14 02:19:20 CEST 2010

> David's solution below will give me the main effect of sex, but
> will not tell me whether the sex effect is significant when the interaction
> is in the model.

Perhaps this is teaching one's grandmother how to suck eggs (not that I've 
actually ever sucked eggs ;)), but I was always told that it is pretty 
hard to interpret _significance_ of a main effect in the presence of an 
interaction.  I would think this doubly so in the presence of your random 

Cheers, David.

| David Duffy (MBBS PhD)                                         ,-_|\
| email: davidD at qimr.edu.au  ph: INT+61+7+3362-0217 fax: -0101  /     *
| Epidemiology Unit, Queensland Institute of Medical Research   \_,-._/
| 300 Herston Rd, Brisbane, Queensland 4029, Australia  GPG 4D0B994A v

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