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4 questions
5
votes
1
answer
261
views
Interpretation of R output for stratified cox-ph model
For the following model:
model <- coxph(formula = Surv(time, status) ~ treatment * sex + strata(sex), data = data)
this is (part of) the model summary in R:
...
- 61
2
votes
1
answer
738
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Stratified-Extended Cox regression modeling to deal with survival data with time-varying covariates
I'm working on Cox regression in my PhD research and I would like to know some references about applying the stratified-extended cox regression model on a real life data.
I'm interested about ...
2
votes
1
answer
224
views
When computing period-specific hazard ratio using Cox, should I add variable:strata or full variable * strata?
Let's asusme I want to calculate separate hazards ratio in two periods, split like below.
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- 23
1
vote
2
answers
5k
views
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 ...
- 113