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1. Re: nlme & residuals (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Wed, 5 Apr 2006 14:20:34 -0500
If "nlme.out" is the output from the run, then just use: resid(nlme.out) Kyle From: s-news-owner@lists.biostat.wustl.edu on behalf of Budhathoki, Chakra Sent: Wed 4/5/2006 1:50 PM To: s-news@wubios.w
/archives/html/s-news/2006-04/msg00011.html (8,007 bytes)

2. random samples (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Fri, 21 Apr 2006 15:49:30 -0500
ast
/archives/html/s-news/2006-04/msg00096.html (7,406 bytes)

3. Re: random samples (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Sat, 22 Apr 2006 15:36:51 -0500
ant
/archives/html/s-news/2006-04/msg00103.html (13,657 bytes)

4. Re: Mixed effects models and R2 (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Sat, 18 Feb 2006 17:10:34 -0600
Don't report any R^2 statistic for any mixed effects model. Snijders & Bosker and Hox give lengthy discussions on why not to. I am presenting a paper at AERA this year on possible R^2 measures for 2
/archives/html/s-news/2006-02/msg00066.html (10,776 bytes)

5. Probability estimates in lme (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Tue, 10 Jan 2006 15:41:59 -0600
I want to extract the Gaussian probability estimates from lme for use in a statistic that I am developing. Any ideas how to get this? What I am looking for is the p(Yij) for a 2-level model given th
/archives/html/s-news/2006-01/msg00034.html (11,917 bytes)

6. Coding Question (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Tue, 24 Jan 2006 15:24:16 -0600
I have a dataset in which I need to dummy code (sort of) two separate variables. Variable 1 I have 5 years of data on students in teachers classrooms. Each teacher entered the intervention at differe
/archives/html/s-news/2006-01/msg00075.html (15,690 bytes)

7. From: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu> (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Wed, 16 Nov 2005 15:41:46 -0600
Quick question, why is the Deviance statistic (-2*LL) so drastically different in a binomial outcome model when using Laplace estimation versus PQL or MQL? I am using the correlatedData library with
/archives/html/s-news/2005-11/msg00042.html (7,972 bytes)

8. Trellis colors (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Mon, 31 Oct 2005 10:59:01 -0600
I use the following commands to change the plot and line colors of a Trellis graph to black for use in publications. color of the lines line<-trellis.par.get("plot.line") line$col<-1 trellis.par.set
/archives/html/s-news/2005-10/msg00096.html (9,682 bytes)

9. NLME and grouping functions (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Fri, 16 Jun 2006 11:11:34 -0500
Dear All, I want to correlated the predicted values from a "lme" run, and the original outcome values from the original dataset. The caveat is that I want to do it honoring the grouping structure. So
/archives/html/s-news/2006-06/msg00030.html (9,340 bytes)

10. lme coefficients question (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Fri, 21 Jul 2006 11:01:01 -0500
I have a question about lme. When I run: coef(lme.out) I get different results from when I run: lme.out$coef I know from my data that the coef(lme.out) contains the right values. Can anyone tell me
/archives/html/s-news/2006-07/msg00054.html (8,578 bytes)

11. Re: lme coefficients question (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Fri, 21 Jul 2006 12:37:28 -0500
Thanks, Doug. For some strange reason, I had initially read the documentation wrong and couldn't make sense of what I had. When I checked the documentation again, I saw that coef.lme are "obtained by
/archives/html/s-news/2006-07/msg00059.html (12,386 bytes)

12. STATA "collapse" function (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Wed, 25 Oct 2006 10:46:56 -0500
Dear All, I am looking for a function in S-PLUS that works like "collapse" in STATA. Specifically, I am trying to create some level-2 and level-3 datasets for use in HLM from a single dataset that I
/archives/html/s-news/2006-10/msg00045.html (7,623 bytes)

13. p-values for variance components in lme (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Fri, 17 Nov 2006 15:26:07 -0600
Does anyone know how to test for the statistical significance of variance components in lme (actually produce the p-values)? I have an editor asking for them. Thanks, Kyle ** J. Kyle Roberts, Ph.D. B
/archives/html/s-news/2006-11/msg00017.html (7,486 bytes)

14. Help with function (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Tue, 9 Jan 2007 09:23:57 -0600
I need to know how to create different pieces of a function that I have created. For example, in aov, one could type aov$contrasts to obtain the contrasts. I want to use this for another application
/archives/html/s-news/2007-01/msg00007.html (10,617 bytes)

15. Merging HLM datasets (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Tue, 13 Feb 2007 11:00:50 -0600
I have two datasets from HLM that I need to merge into a single dataset for use in S-PLUS/R. Specifically, I need to take some teacher-level data (content knowledge) and apply it to every case for t
/archives/html/s-news/2007-02/msg00029.html (8,506 bytes)

16. bwplots (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Mon, 26 Feb 2007 13:28:08 -0600
Is it possible to have a polynomial curve fit to a box and whisker plot? Also, what is the command name for the GUI interface that reads as "LinearCFPlot" in the "History"? In the pulldown, this is t
/archives/html/s-news/2007-02/msg00054.html (7,259 bytes)

17. Re: Help with command of returning the random effect covariance estimate using 'lme' fitting (score: 1)
Author: "Roberts, J. Kyle" <jkrobert@bcm.tmc.edu>
Date: Thu, 1 Mar 2007 10:18:02 -0600
It doesn't quite give everything you need in the same format, but if you use VarCorr(dental.fit) you will get the variance estimates as well as the correlations. Just multiply these correlations by
/archives/html/s-news/2007-03/msg00001.html (14,142 bytes)

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