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st: new version of -xglm- on SSC

From   Roger Newson <>
To   "" <>
Subject   st: new version of -xglm- on SSC
Date   Thu, 28 Jul 2011 16:55:15 +0100

Thanks as always to the greatly appreciated services of Kit Baum, a new version of the -xglm- package is now available for download from SSC. In Stata, use the -ssc- command to do this, or -adoupdate- if you already have a version of -xglm-.

The -xglm- package, an extended version of -glm-, is described as below on my website. The new version has tha additional scalar estimation result -e(msum)-, containing the sum, in the estimation sample, of the binomial total expression -e(m)-. Therefore, if you are fitting a binomial regression model to a sample of samples of binary data (eg a sample of wells on a laboratory plate, each containing a sample of cells, each of which cells may or may not have a chromosomal abnormality), then you can estimate the odds and odds ratios for the event of interest using -xglm-, and also save the total numbers of cells and abnormal cells in the -parmby- resultsset.

Best wishes


Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Web page:
Departmental Web page:

Opinions expressed are those of the author, not of the institution.

package xglm from

      xglm: Extended version of glm

      xglm is an extended version of glm, designed mostly for use
      with the parmby option of the parmest package, downloadable
      from SSC.

      Author: Roger Newson
      Distribution-Date: 27july2011
      Stata-Version: 11

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