[R] cox.zph

Gerrit Eichner gerr|t@e|chner @end|ng |rom m@th@un|-g|e@@en@de
Wed Mar 31 21:38:46 CEST 2021

Yes. :-)

  Best regards  --  Gerrit

Dr. Gerrit Eichner                   Mathematical Institute, Room 212
gerrit.eichner using math.uni-giessen.de   Justus-Liebig-University Giessen
Tel: +49-(0)641-99-32104          Arndtstr. 2, 35392 Giessen, Germany

Am 31.03.2021 um 21:29 schrieb Sorkin, John:
> Colleagues,
> I would like to make certain that my understanding of the tabular output produced by cox.zph is correct.
> Am I correct that the NULL hypothesis being tested is that the hazard is proportional in time?  Therefor a non-significant result indicates that we don't have evidence that the proportional hazards assumption is incorrect and we can assume that the hazard is proportional. A significant result indicates that we have evidence that the proportional hazards assumption is violated.
> Thank you,
> John
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
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