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Results tagged with cox-model
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user 211089
Cox proportional hazards regression is a semi-parametric method for survival analysis. No distributional form needs to be assumed, only that the effect of one-unit increase in a covariate is a constant multiple.
2
votes
2
answers
2k
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Age as a time-dependent covariate
I have some confusion around time-dependent covariates / coefficients.
I'm trying to run a cox regression with age as a time-dependent covariate. Lets say the variable is age-at-first-drivers-license …
- 113
0
votes
1
answer
191
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Survival Analysis - 30% right censored data
Just looking for some clarity regarding time-to-event (death) data when there is a large proportion of right censored data (lots of survival). Is this a serious problem for a proportional hazards mode …
- 113
0
votes
0
answers
106
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Interpreting a hazard ratio for time-dependent coefficients
I have a cox model with two main effects (x,y) and two interaction terms (xt, yt) where t is time. I am having some trouble interpreting the hazard ratios. Does the hazard ration become more of an ins …
- 113
1
vote
0
answers
131
views
Test assumption of common baseline - Adersen-Gill Cox regression?
I'm running a Andersen-Gill recurrent (multiple events) cox model and I want to test the assumption of common baseline across events. Is this as simple as entering 'event' into the model and checking …
- 113
1
vote
2
answers
5k
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Interpreting hazard ratios in stratified models
I am unsure how to interpret hazard ratios from cox-proportional hazard models that include 1 or more stratified terms.
For example, say I run a cox regression with treatment as a covariate and stra …
- 113