Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Essays on the Assumption of Proportional Hazards in Cox Regression
Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
2002 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis consists of four papers about the assumption of proportional hazards for the Cox model in survival analysis.

The first paper compares the hazard ratio estimated from the Cox model to an exact calculation of the geometric average of the hazard ratio when the underlying assumption of proportional hazards is false, i.e. when the hazards are not proportional. The estimates are evaluated in a simulation study.

The second paper describes and compares six of the most common numerical procedures to check the assumption of proportional hazards for the Cox model. The tests are evaluated in a simulation study.

Six graphical procedures to check the same assumption of proportional hazards for the Cox model are described and compared in the third paper. A criterion for rejection is derived for each procedure, to make it possible to compare the results of the different methods. The procedures are evaluated in a simulation study.

In the fourth paper the effects of covariate measurement error on testing the assumption of proportional hazards is investigated. Three of the most common numerical procedures to check the assumption of proportional hazards for the Cox model are evaluated in a simulation study.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis , 2002. , p. 36
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences, ISSN 0282-7492 ; 110
Keywords [en]
Informatics, computer and systems science, Proportional hazards, Cox regression, Proportionality assumption
Keywords [sv]
Informatik, data- och systemvetenskap
National Category
Computer and Information Sciences
Research subject
Statistics
Identifiers
URN: urn:nbn:se:uu:diva-1628ISBN: 91-554-5208-6 (print)OAI: oai:DiVA.org:uu-1628DiVA, id: diva2:161225
Public defence
2002-02-15, Ekonomikum Hörsal 2, Uppsala, 13:15
Opponent
Available from: 2002-01-24 Created: 2002-01-24 Last updated: 2018-01-13Bibliographically approved

Open Access in DiVA

fulltext(351 kB)12656 downloads
File information
File name FULLTEXT01.pdfFile size 351 kBChecksum SHA-1
bbc0c1a573a0b54559977fda473cb5616494f12b1ff2e4a301b78cb5aa55827232caaaae
Type fulltextMimetype application/pdf
Buy this publication >>

By organisation
Department of Information Science
Computer and Information Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 12656 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 1293 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf