[R-sig-ME] Fw: question about Type III sums of squares as computed in "CAR'

[m51988mnew at juno.com]

Yes, in fact, I have used SAS . It happens that  it is more convenient for me to use R than SAS;  I have hoped that I could easily use R to get what I need (in the future) but there seems to be no easy way to do so, Thanks,Stanley Shulman   

---------- Original Message ----------
From: Douglas Bates <bates at stat.wisc.edu>
To: "m51988mnew at juno.com" <m51988mnew at juno.com>, r-sig-mixed-models at r-project.org
Subject: Re: [R-sig-ME] Fw: question about Type III sums of squares as computed in "CAR'
Date: Fri, 20 Nov 2015 17:08:58 +0000


I don't think your data, code, etc. made it through to the list. If you need the SAS results, wouldn't it be easier to use SAS to get them? 
On Fri, Nov 20, 2015 at 10:35 AM m51988mnew at juno.com <m51988mnew at juno.com> wrote:I have attached the example data and the r-code and r messages.The data are example measurements of exposures on 2 occupations ( a and b)on 11 sampling days.  Each occupation  has one measurement per day.  The 11 sampling days are at 4 sites:  3 days at 3 of the sites and  2 days at 1 site.  In addition, there were three  workers who did the second occupation  , labelled 6,7,8, for the variable idb.  I need the SAS type III sums of squares for each of the variables in the model, but you can see the error message in the R code: there are aliased coefficients in the model In SAS I believe that this problem is dealt with by placing constraints on the parameters.I would appreciate any suggestions.  I think that maybe I am formulating the model wrong.  Thanks,Stanley Shulman
 
 ---------- Forwarded Message ----------
 From: "m51988mnew at juno.com" <m51988mnew at juno.com>
 To: r-sig-mixed-models at r-project.org
 Subject: question about Type III sums of squares as computed in "CAR'
 Date: Wed, 18 Nov 2015 02:25:03 GMT
 
 
 When I use "Anova" from the car library, I cannot get Type III sums of
  squares for nested data.  Maybe I am using the program wrong. SAS gives the
  Type III sums of squares. Thanks for any thoughts.Stanley Shulman
 
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