Thank you! It wouldn't feel right to do otherwise
That was very helpful information! Would it also be necessary to be very explicit in...
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Great! Thank you.
So how would one report the tvc estimates in an article?
Most of the studies i have included, use coxregression, but not...
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Hello again Mr. Schechter.
I apologize for spamming with several posts in a row, but i was wondering if you could help me understand how to interpret...Last edited by Jonas Kristensen; 08 Apr 2019, 10:19.
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The reason for the errors in the output was my mistake. I used the time scale(365250). With the time scale(365.25), the results look alot more understandable...Last edited by Jonas Kristensen; 04 Apr 2019, 10:09.
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Perfect, thank you.
In #56 you stated that; "Also, from a syntax perspective, if you specify the variable in tvc(), you do not also...Last edited by Jonas Kristensen; 04 Apr 2019, 04:59.
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Thank you so much for your help. Hmm, so if the only varaibles that have proportional hazards, are sex (ami and age groups could also be close to proportional)...
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Thank you for clarifying! So just to be absolutely sure of what i am doing when using coxregression with time varying covariates. If i wanted to get...
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Cox Proportional Hazards assumption
I am doing time to event analysis, measuring the time from firstever stroke to first event of fracture. I am furthermore using coxregression to analyze...
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Okay Thank you. So firstly, i have read something more in regards to stratified coxregression and your answer in #50:
"In stratified cox regression...Last edited by Jonas Kristensen; 03 Apr 2019, 04:47.
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Yes, the hazards are sadly not proportionate either when using stratified cox.
How would the cox with time varying covariates command look...
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Okay. I am also thinking that i will have to explore other options than the cox proportional hazards model. I have tried removing offending vaiables,...Last edited by Jonas Kristensen; 02 Apr 2019, 09:43.
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Thank you for your advice. Hmm i am a bit unsure of what to do when the PHassumption does not seem to be met?
In regards to the PHassumption test,...
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I am happy to see you write that, because that is also what i ended up doing. I used loglog plots as well as a PHassumption test. From the below plots...
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Okay, thank you.
So would it be sufficient to do the following to estimate proportionality:
Code:stcox i.stroke_severity estat phtest
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Hello again
Thank you for your last reply and support Mr. Schechter. A new question has arisen in regards to checking the proportional hazards...Last edited by Jonas Kristensen; 25 Mar 2019, 11:33.
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