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Total 14 documents matching your query.

1. [S] logistic regression question (score: 1)
Author: "Nathan Leon Pace, MD, MStat" <nlpace@bigpace.med.utah.edu>
Date: Wed, 23 Feb 2000 12:19:51 -0700
In a drug response study I have a binary response variable which I desire to model with a 3 parameter logistic function (a large positive response being present at dose = zero). Can this modeling be
/archives/html/s-news/2000-02/msg00227.html (7,714 bytes)

2. [S] drug interactions (score: 1)
Author: "Nathan Leon Pace, MD, MStat" <nlpace@bigpace.med.utah.edu>
Date: Tue, 25 Jan 2000 15:16:08 +0000
Has anyone on this list created Splus functions to implement tests of the interaction (synergy, antagonism) of drug mixtures for either binary or continuous response variables? Thanks, Nathan -- Nath
/archives/html/s-news/2000-01/msg00185.html (7,546 bytes)

3. [S] repeated measures poisson variables (score: 1)
Author: "Nathan Leon Pace, MD, MStat" <nlpace@bigpace.med.utah.edu>
Date: Wed, 15 Dec 1999 19:42:50 +0000
What is available in Splus to handle repeated measures poisson variables? -- Nathan Leon Pace, M.D., M.Stat, Professor of Anesthesiology University of Utah, Salt Lake City, Utah 84132 W: 801-581-6393
/archives/html/s-news/1999-12/msg00115.html (7,489 bytes)

4. [S] GEE (score: 1)
Author: "Nathan Leon Pace, MD, MStat" <nlpace@bigpace.med.utah.edu>
Date: Sat, 17 Jul 1999 15:29:37 -0600
Has any GEE package been ported to Splus 5.1 (Unix)? -- Nathan Leon Pace, M.D., M.Stat, Professor of Anesthesiology University of Utah, Salt Lake City, Utah 84132 W: 801-581-6393 H: 801-467-2925 W: 8
/archives/html/s-news/1999-07/msg00135.html (7,230 bytes)

5. [S] using by()function (score: 1)
Author: "Nathan Leon Pace, MD, MStat" <nlpace@bigpace.med.utah.edu>
Date: Thu, 06 May 1999 10:54:44 +0000
I am using Splus version 5 release 3 on Sun. I have a data frame with 2 variables and 2 factors (8 levels & 30 levels). I wish to apply a function to the 240 partitions of the data.frame produced by
/archives/html/s-news/1999-05/msg00044.html (8,338 bytes)

6. [S] need to time tomax (score: 1)
Author: "Nathan Leon Pace, MD, MStat" <nlpace@bigpace.med.utah.edu>
Date: Thu, 29 Apr 1999 15:12:18 +0000
I have a data frame with two factors (30 levels & 8 levels), a time variable, and a response variable. I am using aggregate to obtain the max(response) at the interaction of the two factors (240 leve
/archives/html/s-news/1999-04/msg00283.html (7,615 bytes)

7. [S] How well does Splus run on Linux? (score: 1)
Author: "Nathan Leon Pace, M.D., M.Stat." <nlpace@bigpace.med.utah.edu>
Date: Wed, 03 Mar 1999 13:59:15 +0000
I currently run Splus (3.4) on an old Digital Alpha box. It will probably die this year from a Y2K problem. The engineers in my dept want to get a PC box and run Linux. The PC would be robust (500 Me
/archives/html/s-news/1999-03/msg00031.html (8,057 bytes)

8. [S] summaries of effect size measures (score: 1)
Author: "Nathan Leon Pace, M.D., M.Stat." <nlpace@bigpace.med.utah.edu>
Date: Wed, 03 Mar 1999 14:26:09 +0000
In meta-analysis it necessary to show a plot of the results of the individual studies using either relative risk, odds ratio, number needed to treat, or rate difference as the effect measure. Has any
/archives/html/s-news/1999-03/msg00032.html (7,721 bytes)

9. [S] AUC needed (score: 1)
Author: .edu>
Date: Fri, 19 Mar 1999 15:23:57 +0000
I'm looking for a function to calculate the AUC (trapezoid rule). -- Nathan Leon Pace, M.D., M.Stat, Professor of Anesthesiology University of Utah, Salt Lake City, Utah 84132 W: 801-581-6393 H: 801-
/archives/html/s-news/1999-03/msg00210.html (7,401 bytes)

10. [S] Kruskal-Wallis mutiple comparisons (score: 1)
Author: e.de>
Date: Mon, 22 Mar 1999 10:42:45 +0000
In Splus version 5 the multicomp function offers pairwise multiple comparisons of the treatment effects from ANOVA or linear models. I have a data set needing non parametric one way ANOVA (Kruskal-Wa
/archives/html/s-news/1999-03/msg00230.html (8,154 bytes)

11. [S] Kruskal-Wallis multiple comparisons (score: 1)
Author: .gov>
Date: Tue, 23 Mar 1999 16:15:57 +0000
I sent a query to S-News about functions for multiple comparison testing after a Kruskal-Wallis test is significant. Thanks to those who contributed responses: Ken Butler butler@mscs.dal.ca As I unde
/archives/html/s-news/1999-03/msg00245.html (12,865 bytes)

12. [S] change-point analysis (score: 1)
Author: "Nathan Leon Pace, M.D." <nlpace@bigpace.med.utah.edu>
Date: Tue, 15 Sep 1998 14:55:00 +0000
I'M LOOKING FOR EXISTING SPLUS FUNCTIONS FOR CHANGE-POINT ANALYSIS. Nathan Leon Pace, M.D., M.Stat, Professor of Anesthesiology University of Utah, Salt Lake City, Utah 84132 W: 801-581-6393 H: 801-4
/archives/html/s-news/1998-09/msg00091.html (7,428 bytes)

13. [S] use of deriv() (score: 1)
Author: Nathan Pace <nlpace@bigpace.med.utah.edu>
Date: Mon, 11 May 1998 08:49:56 +0000
I am using the deriv() function to prepare an expectation function for use in non linear modeling. My expectation function can be written fairly simply as f(a, b, c, d, e, f, g). In turn a, b, c, and
/archives/html/s-news/1998-05/msg00087.html (7,823 bytes)

14. [S] getting others going in Splus (score: 1)
Author: Nathan Pace <nlpace@bigpace.med.utah.edu>
Date: Fri, 29 May 1998 16:21:10 +0000
e
/archives/html/s-news/1998-05/msg00326.html (7,923 bytes)

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