[R] Book recomendation: Repeated Measurements
vokey at uleth.ca
Mon Jul 15 19:41:59 CEST 2013
On 2013-07-15, at 4:00 AM, r-help-request at r-project.org wrote:
> On 7/14/2013 3:05 PM, Rolf Turner wrote:
>> On 15/07/13 08:57, Spencer Graves wrote:
>>> You may know that "mixed effects" is another term for "repeated
>> I must of course preface this comment with an "I am no expert"
>> disclaimer, but I do not
>> believe that this assertion is correct. It would be more correct, I
>> believe, to say that
>> repeated measurement models form a particular sub-class of mixed
>> effects models.
>> Those who *are* experts may well correct me if I am wrong about this.
> Thanks for the clarification, Rolf. You are absolutely correct.
> "Repeated measurements" refers to the sampling plan. "Mixed effects"
> describes a form of mathematical modeling. There are balanced repeated
> measures data sets where people do not have to worry about the
> subtleties of mixed-effects modeling. An experiment with multiple
> litters with several mice in at least some of the litters would call for
> mixed-effects modeling. This would include "repeated measures" on the
> litters but not the mice.
> However, "I am no expert" on repeated measures / mixed-effects,
And you could have repeated measures within matched blocks (e.g., litters as the matched blocks, and some repeated measure---say trials---on the individual mice in each litter). H. D. Kimmel promoted such designs in the 1960s in a slim volume describing the analysis of two such designs.
Please avoid sending me Word or PowerPoint attachments.
-Dr. John R. Vokey
More information about the R-help