This file is part of IDEAS, which uses RePEc data


[ Papers | Articles | Software | Books | Chapters | Authors | Institutions | JEL Classification | NEP reports | Search | New papers by email | Author registration | Rankings | Volunteers | FAQ | Blog | Help! ]

STARJAS: Stata module to produce Arjas plot to check proportional hazards assumption

Author info | Abstract | Publisher info | Download info | Related research | Statistics
Author Info
Enzo Coviello () (Dipartimento di Prevenzione Az. USL Ba/1)
Abstract

Arjas plots allow to check if a categorical covariate should be included in a proportional hazards model and if this covariate has proportional hazards. For each level a line is plotted. If the covariate does not need to be in the model then for each value a roughly 45° line through origin should be plotted. Otherwise Arjas plots will give curves which are approximately linear but with slope differing from 1. If a covariate has a nonproportional effect on the hazard rate then the curves will differ nonlinearly from 45° line. Assume an indicator variable having only two values 0 and 1, the curve for the level 1 should be concave if the hazard ratio is increasing in t whereas the curve for the level 0 should be convex.

Download Info
To download:

If you experience problems downloading a file, check if you have the proper application to view it first. Information about this may be contained in the File-Format links below. In case of further problems read the IDEAS help file. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL: http://fmwww.bc.edu/repec/bocode/s/starjas.ado
File Format: text/plain
File Function: program code
Download Restriction: no
File URL: http://fmwww.bc.edu/repec/bocode/s/starjas.hlp
File Format: text/plain
File Function: help file
Download Restriction: no
File URL: http://fmwww.bc.edu/repec/bocode/a/arjas_example.ado
File Format: text/plain
File Function: example program
Download Restriction: no
File URL: http://fmwww.bc.edu/repec/bocode/b/BMT.dta
File Format: application/x-stata
File Function: sample data file
Download Restriction: no
File URL: http://fmwww.bc.edu/repec/bocode/s/starjas.pdf
File Format: application/pdf
File Function: presentation slides
Download Restriction: no

Publisher Info
Software component provided by Boston College Department of Economics in its series Statistical Software Components with number S456813.

Download reference. The following formats are available: HTML, plain text, BibTeX, RIS (EndNote), ReDIF
Size:
Programming language: Stata
Requires: Stata version 8.0
Date of creation: 10 Feb 2007
Date of revision: 18 Dec 2007
Handle: RePEc:boc:bocode:s456813

Note: This module may be installed from within Stata by typing "ssc install starjas". Windows users should not attempt to download these files with a web browser.
Contact details of provider:
Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA
Phone: 617-552-3670
Fax: +1-617-552-2308
Email:
Web page: http://fmwww.bc.edu/EC/
More information through EDIRC

Order Information:
Web: http://repec.org/docs/ssc.php

For technical questions regarding this item, or to correct its listing, contact: (Christopher F Baum).

Related research
Keywords: proportional hazards Arjas plot

Statistics
Access and download statistics

Did you know? Authors registered on the RePEc Author Service receive monthly emails with details about downloads and abstract views of their works.

This page was last updated on 2008-5-9.

This information is provided to you by IDEAS at the Department of Economics, College of Liberal Arts and Sciences, University of Connecticut using RePEc data on a server sponsored by the Society for Economic Dynamics.