[R-sig-ME] between-blocks variation in intercepts estimated as zero by lmer in RB design???
davidD at qimr.edu.au
Tue Feb 8 06:34:30 CET 2011
On Mon, 7 Feb 2011, Duncan Mackay wrote:
> Hello, I am having difficulty understanding why lmer is estimating the
> variation among intercepts of random groups (blocks) as zero in the
> following case:-
Negative intracluster correlation.
| 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 \_,-._/
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