Timeline for Cox survival PH violated variable is part of an interaction
Current License: CC BY-SA 4.0
11 events
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| Nov 10 at 8:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jul 12 at 16:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Mar 12 at 9:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Aug 12, 2022 at 17:17 | answer | added | EdM | timeline score: 0 | |
| Aug 12, 2022 at 8:32 | history | edited | KHT | CC BY-SA 4.0 |
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| Aug 12, 2022 at 8:03 | comment | added | KHT |
@EdM Thank you for your comment, I edited my question to show more of my code. Also, I did not use unfold, as my set has no time-dependent variables I can use to unfold my set on. This way of using the cut off points was used in an article I cannot seem to find anymore. It seems to do the trick though
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| Aug 12, 2022 at 8:00 | history | edited | KHT | CC BY-SA 4.0 |
Based on EdM's comment, more insight into my Rcode
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| Aug 9, 2022 at 15:18 | comment | added | EdM |
Also, in your editing, please provide details of the package from which you obtained the unfold() function and how you invoked it. This page suggests that there can be unexpected errors.
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| Aug 9, 2022 at 14:53 | comment | added | EdM |
It's not completely clear to me which term in the model is the one that posed the problem with PH, which term represents the interaction with "time," or why the ggcoxzph output shows a value for Power:stop instead of for Power:DurationStay. Note that the plots provided by ggcoxzph, last I knew, has a serious unfixed error, which makes me wonder if the function has other problems as well. Please edit the question to provide those details and just how you coded the time interaction after using unfold; comments are easy to overlook.
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| Aug 9, 2022 at 14:25 | history | edited | KHT | CC BY-SA 4.0 |
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| Aug 9, 2022 at 13:16 | history | asked | KHT | CC BY-SA 4.0 |